PDF malware analysis — malicious · 241f91b23614f489

MALICIOUS

PDF

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

MD5: b77c3d18c58f50efb3fcb8454120c34f SHA-1: b77dd1cd00ca5d14d594f330d94a11fe6580f818 SHA-256: 241f91b23614f4893c22c003442ffcadc50262aa8228834877810248fc3dacb0

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF document flagged as malicious by ClamAV with the signature Pdf.Exploit.Dropped-94. Static analysis detected embedded JavaScript, indicating an attempt to exploit a PDF vulnerability. The ML classifier also strongly indicated maliciousness. The embedded JavaScript is likely responsible for downloading and executing a second-stage 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` `3c25db54a95b02e5e18025c86a90503a00198a40cd5f2b5ed688567b8f58b7ff`	pdf-javascript-stream	PDF /JS object 76 at offset 0x99B	45453 bytes

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