MALICIOUS
148
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF contains embedded JavaScript, flagged by multiple heuristics as a stager and exploit. The ML classifier strongly indicates maliciousness, and ClamAV identifies it as 'Pdf.Exploit.Dropped-94'. The primary attack pattern involves leveraging PDF metadata to execute JavaScript, which is a common technique for delivering secondary payloads. No specific family could be identified.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Dropped-94
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PDF metadata JavaScript eval stager high PDF_METADATA_EVAL_STAGERPDF JavaScript reads document metadata fields such as title, subject, or producer, decodes character data with parseInt/String.fromCharCode style helpers, and evals the recovered stage. This is a high-signal exploit-kit staging pattern.
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF 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.jsfd3ba85e2adea51d31936d029f7643c38ebda70df559f07d93a041fab82980e4 |
pdf-javascript-stream | PDF /JS object 76 at offset 0x2E0F | 331 bytes |
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