MALICIOUS
64
Risk Score
Malware Insights
MITRE ATT&CK
T1553.005 Mark-of-the-Web Bypass
The primary heuristic firing indicates a polyglot PDF, meaning it contains a secondary embedded PDF with suspicious static findings. This strongly suggests the embedded PDF is designed to exploit vulnerabilities or deliver malicious content. The file itself is a PDF, and the presence of an embedded PDF is a common delivery mechanism for exploits targeting PDF readers. No document body or script content was available for further analysis.
Machine Learning
- Nyx PDF Classifier clean score 0.0613
Heuristics 2
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Secondary embedded PDF body has suspicious static findings critical POLYGLOT_CHILD_PDF_STATIC_TRIAGEA valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_012_off004c5923.bin8c2116392516537e96d4c3bbdece1c7dd43e8a7d3395df25d40517c5a6555966 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x4C5923 | 19497 bytes |
polyglot_child_pdf_off004ccfc3.pdf0fe86a090a11c40db552ee2ca231d8f06ced56de1a0c4ef2dfefd3f15345b512 |
polyglot-child-pdf | Secondary PDF body inside pdf container at offset 0x4CCFC3 | 8388608 bytes |
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