PDF malware analysis — malicious · 91b9dee39fcce9ed

MALICIOUS

PDF

2.7 KB Created: 6414-01-01 Authoring application: 693

MD5: e192907dcebe522b7f09fbaf0d923433 SHA-1: 0ab41aec2489b2cdcbc5a95c73a74a712ee58bf3 SHA-256: 91b9dee39fcce9ed818fc2d122bd8b72c363556093e29c14db0a4b627f31ea4b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged as malicious by ML classifiers and ClamAV, indicating exploitation. Embedded JavaScript, identified as 'javascript_obj0013_001.js', suggests the execution of malicious code. The presence of JavaScript actions and streams within the PDF structure strongly points towards an exploit delivery mechanism, likely designed to download and execute a second-stage 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` `ef8020ec9d7ad30e1a45366da5ea871d7fcf6b0b31e55a47d3d6a719b49558db`	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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