MALICIOUS
106
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The ML classifier and ClamAV detection strongly suggest malicious intent, likely exploiting a PDF vulnerability to execute the embedded JavaScript. This JavaScript is presumed to download and execute a second-stage payload, a common technique for initial compromise via spearphishing attachments.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 3
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ClamAV: Pdf.Exploit.Agent-36388 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36388
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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.
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