PDF malware analysis — malicious · 52e5ca4553ef4197

MALICIOUS

PDF

10.8 KB Created: 2009-03-28 14:59:31 Authoring application: HBBYzcljUWoCzOtAbJA (via EvpstkvoMSJKPHgkUO)

MD5: ae787e452ee1665260a229084df42341 SHA-1: 0ebb7588539346857b4135c4d22843e5f1f0bc25 SHA-256: 52e5ca4553ef4197d7afb8e118788b5ffeadca55c46253921bfdd0525e9608bb

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF document flagged by ClamAV as 'Pdf.Exploit.Agent-35572'. Static analysis detected embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The ML classifier also strongly flagged the PDF as malicious. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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` `1fce3241002889895ea5c2ad953296c355af020283014ee2d7aed9a31dfa95fe`	pdf-javascript-stream	PDF /JS object 7 at offset 0x48F	9151 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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