MALICIOUS
114
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript/JScript
The PDF file contains embedded JavaScript, flagged by multiple heuristics including a critical correlation signal. The ML classifier also strongly indicates maliciousness. The embedded JavaScript is likely responsible for executing the malicious payload, although its specific actions are not detailed in the provided evidence. The PDF structure also includes optional content groups with action triggers, further supporting the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 4
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Correlated malicious PDF JavaScript signals critical PDF_CORRELATED_MALICIOUS_JSPDF JavaScript or auto-action content is corroborated by exploit staging, ML, or suspicious extracted-artifact findings. This correlation promotes old exploit-kit PDFs that otherwise remain in the suspicious band because each individual signal is intentionally weighted conservatively.
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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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Optional Content Group with action trigger low PDF_OPTIONAL_CONTENTOptional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
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