PDF malware analysis — malicious · be9cbbbd9a88bb4c

MALICIOUS

PDF

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

MD5: e2549b94cc54f979b65a748e55dafcc7 SHA-1: 917bf9611d947b7629c2ef5c7be5c682f9beba66 SHA-256: be9cbbbd9a88bb4c969ba4e9da59709e53dd211eb088e62280fe2a0a0a3c2255

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file exhibits multiple high-severity heuristic firings related to JavaScript execution and obfuscation, including an eval() call. The ML classifier strongly indicates maliciousness. The presence of an embedded JavaScript object, named 'javascript_obj0013_001.js', further supports the conclusion that the document is designed to execute arbitrary code. The primary function of the embedded script appears to be downloading and executing a second-stage payload, though its exact behavior is obscured by obfuscation.

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` `bb7fe92c5d1b8cd6f86c797e263fbec1c5991720cf45f084905cfdf37e0805ef`	pdf-javascript-stream	PDF /JS object 13 at offset 0x368	6627 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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