PDF malware analysis — malicious · e9c1057e79484694

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: f3502146112f6124ad34eab16a47049b SHA-1: a86cd9d8710ca9ba8f2fbc299be7a808d203457d SHA-256: e9c1057e7948469464546ef92de1abd52b3f44c7cf4339ec20cc2879a4acd772

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 code execution. Heuristics confirm PDF JavaScript actions and embedded JS streams, with a critical ClamAV detection for 'Pdf.Exploit.Agent-36118'. The ML classifier also flagged it as highly malicious. The JavaScript appears to be designed to download and execute a second-stage payload, as suggested by the obfuscated nature and the use of eval().

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` `40f49aa584b8b816fcd561368bc66ea21db7c9b60083dc50b1d7b5c2e7085681`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13536 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 18 long base64-like blob(s).

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