MALICIOUS
86
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1059.007 JavaScript
The PDF is malformed and lacks a standard object graph, indicating it is not a typical document and likely contains an exploit. Heuristics indicate the presence of JavaScript, suggesting it may attempt to execute malicious code. The ML classifier strongly flags this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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Malformed PDF header with no object graph high PDF_MALFORMED_NO_OBJECT_GRAPHFile starts with a PDF header but contains no indirect objects, xref table/stream, or startxref pointer. This is not a normal renderable PDF and can indicate parser fuzzing, evasion, or a corrupt exploit test case rather than benign content.
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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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