MALICIOUS
86
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1203 Exploitation for Client Execution
This PDF exhibits significant structural malformations, including a missing object graph, which strongly suggests it is not a standard document but rather an attempt to exploit vulnerabilities. The presence of JavaScript actions and embedded JS streams further indicates malicious intent, likely to execute an exploit. The ML classifier's high confidence score reinforces the assessment of maliciousness.
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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