PDF malware analysis — malicious · 4fa5d01b13360f01

MALICIOUS

PDF

2.7 KB Created: 6844-01-01 Authoring application: 6715

MD5: d2dc924d30316118200169c88c3d9c13 SHA-1: cff0840993f7b63983508fcffa141e99585704a6 SHA-256: 4fa5d01b13360f01458e1f2232670a13927765a4272cf84d6f7a75559aac7e51

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating it contains an exploit. Heuristics indicate embedded JavaScript, which is often used to download and execute second-stage payloads. The embedded JavaScript file 'javascript_obj0013_001.js' is the primary indicator of this malicious activity.

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` `663265e653f1d86df4bdf7c17982b93aa672703c02824761797edbcab655eb32`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4834 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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