PDF malware analysis — malicious · 7132d88889fa5687

MALICIOUS

PDF

5.1 KB Created: 2008-32-10 13:12:00 Authoring application: Poeow (via Kskka)

MD5: 0b0a4ff2b4b9e4859c52b0ab181e738e SHA-1: adeb02e1a3b26765eae4cdd55d0414b1edcb5108 SHA-256: 7132d88889fa568738866c38a9bbd2ba9052cc95c598eab10d1d232c295ce79e

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded JavaScript that utilizes eval() and exhibits obfuscation indicators, strongly suggesting malicious intent. The ML classifier also flagged this PDF with high confidence. The JavaScript appears to be designed to download and execute a secondary payload, as indicated by the heuristic firings related to JavaScript exploits and the presence of a large, encoded blob.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
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` `f654066184132d0f94cb444af0f203c416fd921f81677fc72071d5c8a4a180cd`	pdf-javascript-stream	PDF /JS object 13 at offset 0x37F	28155 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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