MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1140 Deobfuscate or Obfuscate Malicious Code
The PDF contains embedded JavaScript and utilizes ASCIIHexDecode and ASCII85Decode filters, indicating an attempt to obfuscate malicious content. The ML classifier strongly flagged this PDF as malicious. The primary function appears to be the execution of obfuscated JavaScript, likely to download and execute a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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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