MALICIOUS
68
Risk Score
Malware Insights
MITRE ATT&CK
T1553.005 Mark-of-the-Web Bypass
T1204.002 Malicious File
The PDF contains an embedded file, flagged by heuristics as a suspicious payload. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated and truncated, contains text that appears to be unrelated to typical document content, suggesting a lure or obfuscation. The primary attack vector appears to be the embedded file, which is likely intended to be executed by the user.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOADPDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
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Embedded file low PDF_EMBEDDEDPDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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XFA form low PDF_XFAPDF uses XML Forms Architecture — can contain script logic
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0007.bin1cbd2568c0391a2f0448b2a69166b270921c2b4dedd31d99a1bd05e06369a21f |
pdf-embedded-file | PDF EmbeddedFile object 7 at offset 0xC1E | 6937 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 4 long base64-like blob(s).
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