PDF malware analysis — malicious · 43e2585cb5233eeb

MALICIOUS

PDF

22.5 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)

MD5: afb3aabcf6b87e202385dc8480d415e6 SHA-1: 4a6e0102ad949f37d50bb88bb9e34e83b3d1553b SHA-256: 43e2585cb5233eeb40e1703fcc5e20b9781ac97e5b5d983b901decb943f23458

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript streams, with one heuristic specifically flagging an eval() call. The ML classifier also strongly indicates maliciousness. The presence of JavaScript and the eval() function suggest the script is designed to dynamically execute code, likely to download and run a second-stage payload. No specific family could be identified from the available evidence.

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` `17aeb43630819cfcf8be9730cc2a16d6da68cb6cee2b61777b8427cf6785599e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1EC	21961 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `c40d4a8eed4988fa66a8bdc167470dc628816a7d4e50505ac5187b0e8b1a7b9a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1EC	21718 bytes

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