PDF malware analysis — malicious · 7d2373b43090a2b8

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: edbf63d3cbf0d2f4b1ffe8f68d4e5fa8 SHA-1: a8b7fc29ec82d063188130196372a61484f6b609 SHA-256: 7d2373b43090a2b832d703782e52d4ef06f2fa218af2204e9cd609c5011ca9e8

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes eval() calls to execute obfuscated code. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically targeting PDF vulnerabilities. The script's primary function appears to be the execution of further malicious code, likely a second-stage payload, though the exact nature is obscured by heavy obfuscation.

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` `5d806c929cb02e6164ce2f6e118658604eaed192eef3799f5f91852929363815`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13474 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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