PDF malware analysis — malicious · 9d3f905c78919367

MALICIOUS

PDF

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

MD5: c6d4adcce754bea785df63ce8d48fa1a SHA-1: 25ef3822e6c74a13a34c26646c665400941840ab SHA-256: 9d3f905c78919367877130e38d1d82a505a607e774c3aa89997fb98e3a730ec1

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple eval() calls, indicating obfuscated malicious code. The ML classifier and ClamAV detection strongly suggest this is a malicious exploit. The JavaScript is designed to execute arbitrary code, likely downloading and running a second-stage payload, as indicated by the 'Pdf.Exploit.Agent-36118' ClamAV signature.

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` `5323057caa4da3c5d9c2a0a8c1e837b806cad019b2382c57d4baac33633e6206`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13221 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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