PDF malware analysis — malicious · e5c879d43bb7e0d5

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: ad6e43e825ab835ae49c3ab04bdae06d SHA-1: fe626fabd5b2238250af62e0912cdbcae8d3bd2e SHA-256: e5c879d43bb7e0d53445c7a7ed06b7a54e48b34dbbe4cf73153dc8653ec8a458

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes eval() calls, indicating an attempt to execute obfuscated code. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to exploiting a PDF vulnerability (Pdf.Exploit.Agent-36118). The primary function of the embedded JavaScript appears to be the execution of further malicious code, as suggested by the use of eval() and the ML classifier's output. The extracted JavaScript file, 'javascript_obj0013_000.js', is a key artifact.

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` `2bf7382e5324e9ef36c25290682e3cd4a3fb13f4e7c5c211e63122b9d24e9634`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13583 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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