PDF malware analysis — malicious · bfcbd97b16b87d3c

MALICIOUS

PDF

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

MD5: af5fb80118b094f989d4abd57c1fc83e SHA-1: d0167ecc73b05c3ec244212e29e1ab99126be69f SHA-256: bfcbd97b16b87d3c9e2e766f003d6c9cb3c7146c1dea0833e4950cb409ac1c8f

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by ML classifiers and ClamAV with the signature Pdf.Exploit.Dropped-94. It contains embedded JavaScript, indicating an attempt to exploit vulnerabilities within the PDF reader. The JavaScript is likely responsible for downloading and executing a secondary payload, which is a common technique for initial access.

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` `6b6d2aecd212fb089739bb608c94681e32cff7ddae7beb1b4376c3fe881f1afc`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99C	45558 bytes

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