PDF malware analysis — malicious · c1a9e314ba5c1087

MALICIOUS

PDF

2.7 KB Created: 9811-01-01 Authoring application: 1659

MD5: ef97ba75f75a63dabae76924d8abc78c SHA-1: 27af32010a871715d03e59a2452057585b0a91d1 SHA-256: c1a9e314ba5c10873ca4753e4243cda4bdf56cc50ec11fae0f62857680e51f4e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML_NYX_PDF_MALICIOUS heuristic further supports its malicious nature. The extracted artifact javascript_obj0013_001.js is likely responsible for executing the malicious payload, potentially exploiting a vulnerability within the PDF reader.

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` `af1f4587ed4610d55e86f488c5434bdf2141a4fe73f8b503979738096bcee0ca`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4779 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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