PDF malware analysis — malicious · ff7d345c74d1a3b1

MALICIOUS

PDF

7.3 KB Created: 2008-31-20 53:85:00 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 22cf2819446fccc35e4f72c1b1f19843 SHA-1: 1c310e35aa158678d4bd9c443fbbe997efc15401 SHA-256: ff7d345c74d1a3b1c301a2e972a806a69a4072bd095fcb9044af8a8e3b26f025

210 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by ClamAV with the signature Pdf.Exploit.Agent-35587. Static analysis revealed embedded JavaScript with eval() calls, indicating an attempt to execute arbitrary code. The JavaScript appears to be obfuscated, making it difficult to determine the exact payload, but the presence of eval() and ML classification strongly suggests exploitation. The primary attack pattern involves leveraging a PDF vulnerability to run malicious JavaScript.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

ClamAV: Pdf.Exploit.Agent-35587 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35587
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `a0279b457835307cc51657c826df7a5d72a7da4695cad127b007d7f61a88acc3`	pdf-javascript-stream	PDF /JS object 13 at offset 0x3DA	5819 bytes
Detection ClamAV: Pdf.Exploit.Agent-35587 Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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