PDF malware analysis — malicious · 7b8dcdd650b445ad

MALICIOUS

PDF

59.7 KB Created: 2006-02-16 15:03:51 -08:00 Authoring application: lice (via ubst)

MD5: 9d853ef29cd4b79dd9a80805e0898e24 SHA-1: c4b4250f16b1394b13e9e4fa07609a258922a72d SHA-256: 7b8dcdd650b445adaa1ea4f72a6f91a0d3f2c0c5c8b53bdccd95b19aa3f868eb

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ClamAV with the signature Pdf.Exploit.Dropped-94 and a high ML classifier score. It contains embedded JavaScript, indicated by heuristic firings and the presence of a large JavaScript object. This JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common attack pattern for this type of exploit.

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` `de34bb558ae414213c931a1ed6e786189196c7f1e4894ddefbc070d93ea33c5c`	pdf-javascript-stream	PDF /JS object 76 at offset 0x955	51168 bytes

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