PDF malware analysis — malicious · de289e269daa3fcb

MALICIOUS

PDF

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

MD5: 112f209fb30b90f04716b907e9ef5ab1 SHA-1: 964853d87067bc80bace540865c77c3d4040738d SHA-256: de289e269daa3fcb2337b2584faa726ab03a4a1f6b3d9a5c2f97afb9bcd8f672

88 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

This PDF file was flagged as malicious by an ML classifier with high confidence. Static analysis revealed embedded JavaScript, including an eval() call, which is a common technique for obfuscating malicious code. The presence of a JavaScript stream and the eval() firing strongly suggest that the script is designed to download and execute a secondary payload. The obfuscated nature of the script prevents a more detailed analysis of its specific actions.

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` `bfbd2cc3ed07a542f06ad1b8e966f07cfb92f8687e370fc9277766a3702cd29d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x364	6505 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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