PDF malware analysis — malicious · 80209d5730d71660

MALICIOUS

PDF

9.4 KB Created: 2009-05-12 15:18:50 Authoring application: ecSHb (via hrD6mo3jDHsK)

MD5: ade37396124f6fa3bcad71f199972a2d SHA-1: b5fdf929364182b4b1932aeb0c9f9c2e872178ba SHA-256: 80209d5730d7166029480b568929e877f6705a9f20a119280a1740bb21aa0799

188 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 6

PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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_obj0007_000.js` `6e060a25b9e89255d59fb86cdac3dff6265aea73125efd64e5ec61e1f7349480`	pdf-javascript-stream	PDF /JS object 7 at offset 0x238	8346 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 4 eval/decoder/string-building token(s).

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