PDF malware analysis — malicious · 6f1b2dc5772e5a1c

MALICIOUS

PDF

59.0 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: Acrobat PDFMaker 7.0.5 for PowerPoint (via ubst)

MD5: 5982db66d02868957c0865a2b4db4f0a SHA-1: 03be14d0e2199a309cbaef23cb7101057b595cb2 SHA-256: 6f1b2dc5772e5a1cef0dab707b76d61350729c4b8c3c455dba410d8b3e9cfa39

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF containing embedded JavaScript, flagged by multiple heuristics and a machine learning classifier as malicious. ClamAV also detected it as 'Pdf.Exploit.Dropped-94'. The JavaScript appears to be obfuscated and is likely responsible for downloading and executing a secondary payload, a common technique for malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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_obj0076_000.js` `6023ee9e070f3864389b726de705e5a2dba88c87202721bc8eccfae4ecf2f10d`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99A	50485 bytes

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