PDF malware analysis — malicious · 3fd94a80f0582482

MALICIOUS

PDF

2.7 KB Created: 8868-01-01 Authoring application: 7850

MD5: f9e85975f44894b5ecc5ea299db20976 SHA-1: 93d4894d3e52251d582bbfeb1a243010e9a28ef5 SHA-256: 3fd94a80f05824822171c0c323ff052906a20db232bf960d993670dfbe34557e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as Pdf.Exploit.Agent-36014. Static analysis revealed embedded JavaScript, which is often used to exploit vulnerabilities or download secondary payloads. The extracted JavaScript file, 'javascript_obj0013_001.js', shows signs of obfuscation, indicating a deliberate attempt to hide its malicious functionality, likely to download and execute a further stage.

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` `9f6b1b57587e0c8b51e487797ab359695000b15f19eef36cc9e8ea5ee380f3cd`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4756 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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