MALICIOUS
68
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF file exhibits multiple heuristic firings indicating the presence and execution of JavaScript. The 'ML_NYX_PDF_MALICIOUS' heuristic with a score of 0.999937 strongly suggests malicious intent. The embedded JavaScript, identified by 'PDF_JAVASCRIPT' and 'PDF_JS', is the primary mechanism for delivering the malicious payload, likely involving downloading and executing further stages. The 'PDF_FILTER_HEX' rule also indicates potential exploit activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEXHex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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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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PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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