MALICIOUS
66
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF file was flagged as malicious by an ML classifier with high confidence. It contains an embedded JavaScript file, which is a common technique for delivering secondary payloads. The presence of PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic further supports this. The JavaScript file itself is the primary IOC. The exact intent of the script could not be fully determined due to its size and potential obfuscation, but it is highly likely to be a downloader.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 3
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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
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_001_off00000331.js04c504e7bd370504c7e06a584ea5d12655f5b753405fcba99eece82d13c0f528 |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x331 | 13524 bytes |
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