MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript/JScript
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
The PDF contains embedded JavaScript and uses ASCIIHexDecode and ASCII85Decode filters, indicating an attempt to obfuscate malicious code. The ML classifier strongly flags this PDF as malicious, suggesting it's designed to exploit vulnerabilities and likely execute a secondary payload via JavaScript.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
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