PDF malware analysis — malicious · 90b42efd6a8276d5

MALICIOUS

PDF

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

MD5: b5f2c834eb42d856302b98d373468158 SHA-1: 22efab26993b4a533b9b5d5b64b688fe0664d55a SHA-256: 90b42efd6a8276d552598391411b0df9544e2a4daaecf9d7a405f50c94bb424a

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Dropped-94' and a high ML score. The presence of embedded JavaScript, identified by PDF_JAVASCRIPT and PDF_JS rules, strongly suggests an exploit is present. The JavaScript is likely used to download and execute a secondary payload, as indicated by the ClamAV detection name. The document body contains metadata that does not provide further clues about the user-facing lure.

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` `c9c5216ca96327546c9eae55bd86d05fa9102f7f2c6ed51ac338da7524358ca1`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99C	45712 bytes

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