PDF malware analysis — malicious · 6144f6d9bc4cdb9f

MALICIOUS

PDF

1.3 KB

MD5: 4da6f846e93f654dcc910326c803fe82 SHA-1: 7973b594a7ae2f9d9891153c432131545d174820 SHA-256: 6144f6d9bc4cdb9fecccf89b977cb94e298b6cdfa73133fe9019ce545ed2869e

148 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

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.
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_obj0005_000.js` `40b48a730be81fdc8e83bc26532c7c2becaf486da09ce7b855ee2d11b2389956`	pdf-javascript-stream	PDF /JS object 5 at offset 0x156	1325 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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