PDF malware analysis — malicious · 76ce6245f73df846

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: 169156c15e13e90eaf76f79c39114463 SHA-1: a5fb73eba725bdf65f4f53c3f5b6c64495ba4a61 SHA-256: 76ce6245f73df846ccaaf6b517e152e69d703afd5fd44f17cf476a4dffb55c25

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript that is heavily obfuscated. Heuristics indicate this JavaScript is malicious and likely responsible for downloading and executing a second-stage payload, as suggested by the ClamAV detection name 'Pdf.Exploit.Dropped-94'. The ML classifier also strongly flagged this PDF as malicious.

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` `7187bf47544a19c3aa4e757df736f917ac712a863222e98935bbb62aefc5dd8b`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99B	50414 bytes

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