PDF malware analysis — malicious · c580ec746ade5ab3

MALICIOUS

PDF

4.6 KB Created: 2008-08-06 01:42:27 Authoring application: Scribus 1.3.3.12 (via Scribus PDF Library 1.3.3.12)

MD5: 2c9380fa988a7739a9ad26d62cbc66de SHA-1: 7c79340b38830ba200262f292531da1444918093 SHA-256: c580ec746ade5ab3d1e356486ec78979af4662a9b4842de736920b2d56426e7a

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. A high-confidence heuristic, PDF_EVAL, flags an eval() call within the decoded JavaScript stream, suggesting obfuscated code execution. The ML classifier also strongly flags this PDF as malicious. The embedded JavaScript file, javascript_obj0013_001.js, is likely responsible for downloading and executing a secondary payload, although its exact function is obscured.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_001.js` `c62758c07ab0d955392859607f35fc24671a0e5311701b60b9c74d84b71d95c8`	pdf-javascript-stream	PDF /JS object 13 at offset 0x36C	6367 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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