PDF malware analysis — malicious · 89720e1d2c85e681

MALICIOUS

PDF

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

MD5: a8a9756bbae02c6a0f2195fa0b0afa8f SHA-1: 854fc51e66f328a34a7376cb51989a16278037e6 SHA-256: 89720e1d2c85e68116dfc08335dc52063435b84f69f0f2191e1452c11ced215e

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as Pdf.Exploit.Dropped-94. It contains embedded JavaScript, indicating an attempt to exploit vulnerabilities within the PDF reader. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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` `8d7216ad973325e5ee471845611f58d9cb133dccee7ddf24943ebaa0b3f55bf7`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99B	45684 bytes

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