PDF malware analysis — malicious · 3a3bec3417a479b2

MALICIOUS

PDF

14.6 KB Created: 2008-07-26 19:43:58 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: aaf9eab3ac026cff6be5af3749ac902e SHA-1: fcb10ee27f3d881c32d30d88d00e2d8173d2889c SHA-256: 3a3bec3417a479b2992ca5c8d600f57c99d6b9d12efa65fcc9a0f2b7f2551105

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript with multiple eval() calls, indicating obfuscation and likely malicious intent. The ML classifier and ClamAV detection strongly suggest this is a malicious PDF exploiting a vulnerability. The JavaScript is heavily obfuscated, but the presence of eval() and the ML score point to it attempting to download and execute a secondary payload. The specific exploit is identified by ClamAV as Pdf.Exploit.Agent-36118.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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_000.js` `184ba4367cb51e255b4e6e4c24e78eeb4d17775ea7e9fc2ae428f96195e4918d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13354 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 14 long base64-like blob(s).

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