PDF malware analysis — malicious · 1cd646af076e31ef

MALICIOUS

PDF

2.7 KB Created: 8308-01-01 Authoring application: 9711

MD5: d89bd3a05b76b539a772544e23747351 SHA-1: b47031564e808854fd8950fb3c9f8372de9a38cf SHA-256: 1cd646af076e31ef9823849e71247a3ba70ee71dc8f1bde72ce21e7f4132f61d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/Shell Script Execution: JavaScript Execution

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ML classifier and ClamAV detection strongly suggest malicious intent, with ClamAV specifically identifying it as 'Pdf.Exploit.Agent-36014'. The embedded JavaScript is likely used to exploit a vulnerability within the PDF reader to download and execute a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `1db23a3ff8ec0859240739e8c6de3cb390926a3549182cba7ad3d996a76f1b01`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4798 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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