Malware URL Scan

Detect malicious code, viruses, and ransomware hosting on specific URLs or domains.

Evidence ASSESSED

Checked against: VirusTotal v3 and URLhaus (abuse.ch)

RED TEAM 0 findings BLUE TEAM control did not hold

About Malware Scanning

Malware (malicious software) is any software intentionally designed to cause disruption to a computer, server, client, or computer network.

Drive-by Downloads: Sites that automatically start downloading malware when visited.
Ransomware: Sites that host software designed to block access to a computer system until a sum of money is paid.
Botnets: Sites used to control a network of private computers infected with malicious software.

Our Malware Detection tool checks whether a URL or domain is known to serve malicious content, drawing on threat intelligence covering drive-by downloads, injected scripts, exploit kits and malicious redirects.

What is Website Malware?

Website malware is malicious code served to visitors from a web page. It usually arrives through compromise rather than intent — an attacker gains access to a legitimate site and injects code that attacks the people who visit it.

Several forms are common. Injected JavaScript loads a payload from an attacker-controlled server. Malicious redirects send a proportion of visitors to an exploit kit or scam page. Skimmers, sometimes called Magecart attacks, sit on checkout pages and copy payment card details as they are typed. Cryptominers consume visitor CPU without consent.

What these share is that the site owner usually has no idea. The injected code is often obfuscated, sometimes served only to visitors arriving from search engines, and frequently hidden from anyone logged in as an administrator — so the site looks completely normal to the person best placed to notice.

Malicious code served to visitors, usually after a site compromise
Includes injected scripts, redirects, skimmers and cryptominers
Frequently hidden from administrators and direct visitors
Often served selectively based on referrer or user agent
Payment skimmers specifically target checkout pages

Why Malware Detection Matters

Serving malware turns your site into an attack vector against your own users. The immediate consequence is a Safe Browsing listing that removes essentially all your traffic, but the underlying harm is to the people who trusted you.

Payment skimmers deserve particular attention. They sit quietly on checkout pages copying card details for months, and because the site continues to function perfectly there is no operational symptom at all. Discovery usually comes from the card networks rather than from the merchant, by which point the exposure is substantial and the regulatory consequences follow.

Turns your site into an attack vector against your own visitors
Triggers browser blocking that removes nearly all traffic
Payment skimmers operate undetected for months
Discovery often comes from card networks rather than internal monitoring
Data protection obligations apply once visitor data is exposed

How This Malware Detection Works

The tool checks the URL against malware intelligence sources.

Validates the URL input against format and SSRF safety checks
Queries malware intelligence feeds for the domain and URL
Checks for known malicious hosting and distribution classifications
Reports any detection along with its category
Provides the remediation path where a detection exists

How to Use Malware Detection

Enter the URL or domain you want to check
Run the scan against malware intelligence data
Review whether any detection was found and of what type
If detected, begin incident response rather than simply deleting the visible code
Re-scan after cleanup, and continue monitoring afterwards

Understanding Your Malware Scan Results

Each detection category points at a different kind of compromise:

Field / Value	Meaning
`Clean`	No detection in the sources checked. Useful but not conclusive — intelligence lags new compromises, and selectively served malware evades many scanners.
`Injected script`	Malicious JavaScript added to pages, usually loading a payload from elsewhere. The most common form, and typically the result of a vulnerable plugin or stolen credentials.
`Malicious redirect`	Visitors are sent to an attacker-controlled destination, often only when arriving from a search engine so that direct visits look normal.
`Payment skimmer`	Code on checkout pages copying card details as they are entered. Critical severity, with regulatory consequences as well as security ones.
`Cryptominer`	Consumes visitor CPU to mine cryptocurrency. Less immediately damaging but still unauthorised use of visitor resources, and it indicates a compromise.
`Drive-by download`	Attempts to install software without user interaction, usually by exploiting a browser or plugin vulnerability.
`Distribution host`	The domain is hosting payload files served to victims of attacks elsewhere. Common on compromised sites used as infrastructure rather than as targets.

Common Problems & How to Fix Them

The site has been compromised. Treat this as an incident rather than a cleanup task.

Preserve evidence first, then identify and remove the injected code, update every component, rotate all credentials including database, FTP, SSH and administrative accounts, and search for persistence mechanisms. Only then request review from browser intelligence services.

Removing the visible code without closing the entry point guarantees reinfection, usually within days.

Modern injections serve malicious content selectively — only to visitors arriving from search engines, only to mobile user agents, or never to anyone with an administrator session cookie.

Test in a private window, from a different network, with a mobile user agent, and by arriving through a search result. Examine the raw page source rather than the rendered page, since injected script is often appended after the closing body tag.

The entry point is still open, or a backdoor remains.

Look beyond the obvious files: modified core files, web shells in upload directories, scheduled tasks, database-stored injections, and additional administrator accounts. Check every site sharing the hosting account, since attackers move between them. If the original vector is unclear, rebuilding from a known-good backup on fresh infrastructure is often faster than continued cleanup.

This is a critical incident with regulatory dimensions. Card data has probably been exfiltrated for as long as the code was present.

Remove the code, identify the exposure window from logs, notify your payment processor and acquiring bank, and follow the breach notification obligations that apply in your jurisdiction. PCI DSS requirements apply to the investigation. Do not delay notification while completing technical cleanup.

A compromised library, advertising network or analytics provider is delivering malicious content through a script you legitimately include.

Audit every external script on the site. Use subresource integrity attributes so a modified third-party file is refused by the browser, and constrain what external scripts can do with a Content-Security-Policy.

Best Practices

Monitor for unexpected file changes rather than relying on periodic manual review
Keep the CMS, themes, plugins and libraries updated
Use subresource integrity on third-party scripts
Deploy a Content-Security-Policy restricting where scripts may load from
Restrict upload directories so they cannot execute scripts
Test your own site from multiple contexts, since injections are often served selectively
Maintain clean backups on separate infrastructure

Security Recommendations

Treat any detection as a full compromise and respond accordingly, rather than deleting the visible code and moving on
Find and close the entry point, or the site will be reinfected within days
Rotate every credential after a compromise, including ones you believe were not involved
Search for persistence mechanisms — web shells, cron jobs, database triggers, extra admin accounts
Treat payment skimmers as a reportable data breach with regulatory obligations, not merely a technical problem
Preserve logs and a copy of the compromised state before cleaning, since you will need them to establish the exposure window

Frequently Asked Questions

Usually through a vulnerable component — an outdated CMS, theme or plugin — or through stolen credentials. Compromised hosting accounts and malicious third-party scripts are also common routes. Deliberate hosting by the owner is rare.

Injections are frequently served selectively: only to visitors arriving from search engines, only to certain user agents, or never to logged-in administrators. The site looks perfectly normal to the person most likely to check it.

A payment skimmer injected into checkout pages that copies card details as customers type them. The site continues working normally, so these run undetected for months and are usually discovered by card networks rather than the merchant.

Preserve evidence, remove the malicious code, update every component, rotate all credentials, and search for backdoors and other persistence. Then request review from browser intelligence services. Cleaning without closing the entry point guarantees reinfection.

Because the entry point is still open or a backdoor remains. Look for web shells, modified core files, scheduled tasks, database-stored injections and unauthorised administrator accounts. Check every site sharing the hosting account.

No. Intelligence lags new compromises, and selectively served malware evades scanning. A clean result is reassuring but not conclusive — file integrity monitoring on your own infrastructure is a stronger control.

Keep everything updated, use strong credentials with multi-factor authentication, restrict upload directories from executing scripts, deploy a Content-Security-Policy, use subresource integrity on third-party scripts, and monitor for unexpected file changes.