PDF malware analysis — malicious · 0668df4b07f3590d

MALICIOUS

PDF

14.4 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 0bca288ca31d246e5c997e7cae087379 SHA-1: 36ac9b552301fe3e8154c5237870e629e6a6dbec SHA-256: 0668df4b07f3590d922147900b016b9d70d531d218f6a27cb0e3b644c0239102

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV detections indicate it's a dropper, likely designed to download and execute a secondary payload. The obfuscated JavaScript, while not fully decipherable, strongly suggests malicious intent consistent with a dropper family.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7224708-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7224708-0
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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_obj0007_000.js` `e66eb77203d577dbbbe2c998db892f839df2730ab6c218399354459aeacf5010`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74433 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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