PDF malware analysis — malicious · c2cbc84fb2d14213

MALICIOUS

PDF

2.7 KB Created: 6841-01-01 Authoring application: 8227

MD5: fba008733bf17a8d3323a6c82a512da8 SHA-1: 0a2a0ef7361cb0f61f55dab5157506e176f85781 SHA-256: c2cbc84fb2d14213473b69a76663eb5ace23397eb370defc37b94a693032ebd5

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, indicating it contains an exploit. Embedded JavaScript streams and actions were detected, suggesting the execution of malicious code. The presence of a suspicious extracted JavaScript file, 'javascript_obj0013_001.js', further supports this. The primary attack vector appears to be leveraging a PDF vulnerability to run embedded JavaScript, likely to download and execute a secondary 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` `47e0fc0a145aee131fa718d15c885912bc90fec72e94f5e3e7f3730a279271ba`	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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