PDF malware analysis — malicious · f32e648786225bb3

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: a19568eb21aade295842c0f4b2ac45bd SHA-1: fe5d29195e5b0ede8ace244596d486811b3d4fc2 SHA-256: f32e648786225bb343b43e82b04fd220bd919a4bc5de2fdb3ca1eb4d6b7ccf47

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript with multiple obfuscation layers, including the use of `eval()` and string concatenation. Heuristics indicate a high likelihood of exploit activity and a critical ClamAV detection for 'Pdf.Exploit.Agent-36118'. The ML classifier also flagged this PDF with a very high probability of being malicious. The script's obfuscated nature prevents a full analysis of its exact payload, but the presence of `eval()` and exploit-related heuristics strongly suggests it's designed to download and execute a secondary malicious component.

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` `0a3681fd3e88ac4d53d8a3419e9843cbe3790090acf78d9125737c136b8c002d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13529 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 4 long base64-like blob(s).

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