About PDF Virus Scanner
Protect Yourself from Malicious PDF Files
PDF files are one of the most common formats used for document sharing, but they are also a frequent vector for cyberattacks. Hackers can embed malicious JavaScript, auto-launching executables, and phishing payloads inside seemingly innocent invoices or resumes.
Our free online PDF Malware Scanner allows you to analyze any PDF file for suspicious elements before you open it. By scanning for specific PDF dictionary tags associated with vulnerabilities (, , ), our tool acts as your first line of defense.
100% Private, Client-Side Scanning
Most people hesitate to use online virus scanners for sensitive documents because doing so requires uploading bank statements or confidential contracts to a third-party server.
PDFMerger.io solves this problem by performing the entire malware analysis locally using JavaScript processing in your browser tab.
- Total Privacy: The file is never transmitted over the internet.
- Instant Results: Fast processing without upload/download delays.
- No Data Logging: We do not retain copies or metadata of the files you scan.
What Does It Detect?
Our scanner checks for elements commonly used in PDF exploits:
- Embedded JavaScript: While some legitimate PDFs use JS for form validation, attackers frequently use it to drop malware.
- Open Actions: Triggers that force the PDF to run a command or script the moment it is opened.
- Launch Commands: Directives that attempt to run external applications or scripts on your operating system.
- Embedded Files: Hidden secondary files that might contain viruses.
Avoid the risk of getting compromised. Scan any suspicious document with our PDF virus scanner before opening it.