PDF malware analysis — malicious · cb6f1d803101278b

MALICIOUS

PDF

9.3 KB Created: 2010-02-22 07:27:22 Authoring application: EBmFqxfuwqxXkB (via awbUevqAWaZNNsMNxpN)

MD5: 9fb492e1cb443cc91315787e830ae623 SHA-1: a5fd0041b3bd119edb95ca795c90f98b788bc12c SHA-256: cb6f1d803101278bd1d29ef41b0081f5a5fa99e63a8c176927bf26747abd996a

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and ML classifier firing strongly indicate malicious intent. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the document is designed to exploit a vulnerability. The embedded JavaScript file, 'javascript_obj0007_000.js', is the primary artifact for further analysis, likely serving to download and execute a secondary payload. The document body content appears to be obfuscated or corrupted, providing no clear user-facing lure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
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.
Suspicious extracted artifact info 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `624425d1d4c2e8d1388154f84c74f4baaf753e087a38e23c5478e68d8ed96914`	pdf-javascript-stream	PDF /JS object 7 at offset 0x473	7595 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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