MALICIOUS
66
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1566.002 Spearphishing Attachment
The PDF file was flagged as malicious by an ML classifier with high confidence. It contains embedded scripts and an embedded file, indicating an attempt to deliver a payload. The presence of XFA forms and embedded scripts suggests a complex attack vector, likely aimed at exploiting PDF reader vulnerabilities or delivering further malicious content. The ML classifier's output strongly supports a malicious classification.
Machine Learning
- Nyx PDF Classifier malicious score 0.9799
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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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/xfa-template/2.5/
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_pdf_script_000002da.binff6cdb8929ce9febe0cdae4777f5fd0ce488f4d8f74002652d2dc74767c64a38 |
pdf-embedded-script | PDF decompressed stream script payload at offset 0x2DA | 14230 bytes |
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