PDF malware analysis — malicious · 7afc632535fb7cbb

MALICIOUS

PDF

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

MD5: aadc3f7f8af74d29d3f328dc46fb56b9 SHA-1: 76b824bac96275fd83b1ab3058e5c706d87477fb SHA-256: 7afc632535fb7cbb0257e3081bcdd42a014ab968ec1fd31f3b4b5b79e90bd2b9

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript that utilizes an eval() function, indicating an attempt to execute arbitrary code. The script reconstructs a complex string which is then passed to eval(), likely to download and execute a second-stage payload. The ML classifier and ClamAV detection strongly suggest this is a malicious exploit document.

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` `fc6965348eee78df0e5db45b1358b434ce230b36bf7c770c76ce79e36bce2529`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13628 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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