PDF malware analysis — malicious · 2f5198c2a9615032

MALICIOUS

PDF

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

MD5: aff44b34aa3c7caaa631a46d01648ac8 SHA-1: 7805b8898c427f6919f35c583b78045e470a5bc1 SHA-256: 2f5198c2a96150320a392ec74b0b2ca1ef5b07831b6d54ae4c37b30c2b830e38

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 obfuscated code execution. Heuristics confirm PDF JavaScript and eval() usage, and a machine learning classifier flagged it as highly malicious. ClamAV detected it as 'Pdf.Exploit.Agent-36118'. The script's intent is to download and execute a second-stage payload, as evidenced by the obfuscated JavaScript and the ML classifier's output.

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` `1201e254f1d301a5cc4392de30fb2d3182c0424224f537f269c4fbb39b5bb5f4`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13516 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 21 long base64-like blob(s).

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