MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The sample is a PDF file flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Exploit.Dropped-78. The presence of an embedded script payload and an embedded file suggests the PDF is designed to exploit a vulnerability and execute a secondary payload. The ML classifier also strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 5
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ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Dropped-78
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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 script payload in PDF stream low 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 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/
- http://www.xfa.org/schema/xfa-data/1.0/
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0008.binaafed3e6e4262bf16f518fe87b2a3082162ac8322d3d9495107fcf122fcb32b7 |
pdf-embedded-file | PDF EmbeddedFile object 8 at offset 0xC8 | 11244 bytes |
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