PDF malware analysis — malicious · 1cf8578ff835cdfb

MALICIOUS

PDF

10.9 KB Created: 2009-09-11 14:29:27 Authoring application: ykPHNdaEKbnDykqH (via fNuAZZQNkDtWyvTTu)

MD5: 31907ec37e265137dbcda89db17e0ba7 SHA-1: 333415a034f2673ae387516ad72c2ecbc5be67d9 SHA-256: 1cf8578ff835cdfb8146aac6d0bb4d4c873d543c8243208d2e4ad1cd4ed923a3

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF was flagged by ClamAV as Pdf.Exploit.Agent-35572 and a machine learning model with high confidence. It contains embedded JavaScript, which is often used to exploit vulnerabilities within PDF readers. The JavaScript is obfuscated, but the presence of embedded scripts and the ML/ClamAV detections strongly indicate a malicious exploit attempt.

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` `a7c92c811b46cdd6ec724e294ecaf46c3eefc67b3dc2e6f30279180e61671b6f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x4F1	9109 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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