MALICIOUS
74
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript/JScript
T1204.002 Malicious File
The sample is a PDF file flagged as malicious by an ML classifier. It contains embedded JavaScript and uses ASCIIHexDecode filters, indicating an attempt to obfuscate malicious code. The presence of JavaScript actions and embedded JS streams suggests the document is designed to execute arbitrary code upon opening. The specific URLs extracted are related to XFA schemas, but their reputation is unknown or benign, and they do not appear to be directly involved in the malicious execution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 5
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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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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/2.6/
- http://www.xfa.org/schema/xfa-template/2.6/
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