PDF malware analysis — malicious · 3db79c0ca644c186

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: fa97bee8cdb3f2fc6b8c550a8626baa5 SHA-1: 48896ba63b922dfcaa080ed5d8ab36ab35fe8181 SHA-256: 3db79c0ca644c1869cca2330de33bbead4c8598d5c3603e30a17ae5fd6828b06

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains obfuscated JavaScript with multiple `eval()` calls, a common technique for executing malicious code. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary mechanism appears to be the execution of JavaScript, which is likely used to download and execute a secondary payload, as suggested by the `eval()` function and the presence of a JavaScript object.

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` `2053f1e1770bb2063b824a46d09902c318a578f296deebdec786b91fb7237d15`	pdf-javascript-stream	PDF /JS object 13 at offset 0x336	13580 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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