MALICIOUS
146
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF contains embedded JavaScript, flagged by multiple heuristics including a specific 'PDF_METADATA_EVAL_STAGER'. This indicates the script within the metadata is likely used to decode and execute further malicious code. ClamAV detection as 'Pdf.Exploit.Dropped-94' strongly suggests it's a dropper for other malware. The ML classifier also confirms a high probability of maliciousness. No specific family could be identified, but the attack pattern is consistent with exploiting PDF vulnerabilities to download and execute secondary payloads.
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.js688e434f5b8f09f1bfb352963120f22b39ba159af2082a4e6cd946b04e7a8d40 |
pdf-javascript-stream | PDF /JS object 76 at offset 0x3140 | 331 bytes |
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