PDF malware analysis — malicious · 4e91f9c5f6e94e49

MALICIOUS

PDF

2.7 KB Created: 1006-01-01 Authoring application: 3249

MD5: dfa4f8a5712bbf1fb60f0d8158577d9d SHA-1: 3d25f4096e86e764776c7d0b7fc637f19c56be82 SHA-256: 4e91f9c5f6e94e492f7c6c2226881e53bb3cb5b051b43dd0863f4a6dc6519708

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by multiple engines, including ClamAV and an ML classifier. Heuristics indicate the presence of embedded JavaScript, which is further confirmed by the extracted artifact 'javascript_obj0013_001.js'. This JavaScript is likely used to exploit vulnerabilities within the PDF reader, leading to the execution of malicious code. The ML classifier's high confidence score and the critical ClamAV detection strongly suggest a known exploit pattern.

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` `a9fb6f03747f90675658f58febe47fbdbd981c065830b22b4fce9c0f8cb63650`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4814 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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