PDF malware analysis — malicious · ceb8d55150d6707e

MALICIOUS

PDF

25.9 KB Created: 2006-02-01 14:14:12 Authoring application: Wegoptyr (via HghTc6Fs)

MD5: 1c424dccace7a806203b6c738444acdd SHA-1: fbf514ecfddccd2bb008b3b6cce47b1f705d08b6 SHA-256: ceb8d55150d6707e0d89a29603caf40b6bcd606ae12aab13a455bbea0ea489cb

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, with one heuristic firing indicating an eval() call. The ML classifier strongly suggests maliciousness. The JavaScript appears to be obfuscated, making it difficult to determine the exact payload, but the presence of eval() and embedded scripts points to code execution. The document body contains what appears to be obfuscated JavaScript code, further supporting this. No specific family is identifiable due to the 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
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `c76efbd815a12d94514403ae7e9e4916bd58b2f679b53c862de958ecfb6b2d54`	pdf-javascript-stream	PDF /JS object 7 at offset 0x217	25335 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `62f7ee25b02d9bf64be0a7adb80ffd99c713b30cb819a5caea0478ccf267528a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x217	25060 bytes

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