PDF malware analysis — malicious · 2ca3a5d31b050782

MALICIOUS

PDF

2.7 KB Created: 5671-01-01 Authoring application: 5571

MD5: e47aee65bc2ba6f3136e9f6640998f50 SHA-1: 440dd190180f2df7b092adb832f0d80825184431 SHA-256: 2ca3a5d31b050782672a5e06569a5699c2fe8ed28d4a2464dd51197155974ccf

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript file, javascript_obj0013_001.js, likely contains obfuscated code designed to exploit a vulnerability within the PDF reader, leading to the execution of a malicious payload. The specific exploit and payload are not detailed in the provided evidence.

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` `8f76c7f882c150f6b59c5c9da34abc19c54566542c50840f9d7406d40f30cb7d`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4781 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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