PDF malware analysis — malicious · 53159b92101b7c45

MALICIOUS

PDF

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

MD5: acf2a3a31850b0f4956ee9036e44fc69 SHA-1: 5635feace01114179d8fdc87928343738bd1ada9 SHA-256: 53159b92101b7c458525ff17448ce151d6901b0250c571b82b0518a5a1d09f40

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, as indicated by multiple heuristic firings and the presence of a large JavaScript object. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically classifying it as 'Pdf.Exploit.Dropped-94'. The embedded JavaScript is likely responsible for downloading and executing a secondary payload, which is 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` `d5538841a8c6dbbd1742d939c04d9ba2545b15b1b814a478ad70523d692bbbc2`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99A	50918 bytes

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