PDF malware analysis — malicious · a9a122faa25733bb

MALICIOUS

PDF

2.7 KB Created: 594 Authoring application: 8871

MD5: ffa31652a94d2c92822dba62bec231b9 SHA-1: c9ed1c6fd0ba9e54917889affbc6c367f7ca099c SHA-256: a9a122faa25733bb3c85d37899d058b4760959e2c739563e6e7b653a1a673446

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ML classifiers and ClamAV with the signature Pdf.Exploit.Agent-36014. Static analysis revealed embedded JavaScript, which is often used to deliver exploits. The extracted JavaScript file, 'javascript_obj0013_001.js', shows signs of obfuscation and hex escape sequences, indicating it likely contains malicious code designed to exploit vulnerabilities within the PDF reader. The primary attack pattern involves tricking the user into opening a malicious PDF that then executes embedded JavaScript to compromise the system.

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` `5bc791c6bb46b11307925c5884aa19ac7aabbaec820cf17f5edb9443158eb3a2`	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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