PDF malware analysis — malicious · 1c99e4b14dc9c975

MALICIOUS

PDF

2.7 KB Created: 1223-01-01 Authoring application: 8904

MD5: dddd880ff0277c0b2fc78804b509b9e6 SHA-1: 83e79e175194b5bd6ed15ab190c0c92e2500fda3 SHA-256: 1c99e4b14dc9c97562ab8ab3fb4bf76324e6d6786c659017a6d8252b2c8ca052

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ClamAV (Pdf.Exploit.Agent-36014) and an ML classifier. Heuristics indicate the presence of embedded JavaScript with obfuscation, suggesting an attempt to exploit vulnerabilities. The extracted JavaScript file, 'javascript_obj0013_001.js', is likely responsible for delivering the exploit 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` `91be461148c7e924dc5c051bef5930992f63de41def4f88e0fc1270a6e3d31c5`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4793 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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