MALICIOUS
116
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The critical ClamAV detection and high ML classifier score strongly indicate malicious activity. The PDF_EMBEDDED and PDF_XFA heuristics, along with the presence of embedded files, suggest an exploit targeting PDF features. The embedded URLs, though benign, are part of the PDF structure. The overall pattern points to a malicious PDF designed to exploit vulnerabilities and likely download further malware.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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ClamAV: Pdf.Exploit.Agent-36962 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36962
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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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AcroForm button with action trigger low PDF_ACROFORM_BUTTONPDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
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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://www.xfa.org/schema/xfa-locale-set/2.1/
- http://ns.adobe.com/xdp/
- http://www.xfa.org/schema/xci/1.0/
- http://www.xfa.org/schema/xfa-template/2.2/
- http://www.xfa.org/schema/xfa-data/1.0/
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
embedded_file_obj0041.binc06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb |
pdf-embedded-file | PDF EmbeddedFile object 41 at offset 0x2BC6 | 85 bytes |
embedded_file_obj0042.bindda0835df994b8be920f715db36452f6cee7bb42bbc9c897f878a7b298ba8e91 |
pdf-embedded-file | PDF EmbeddedFile object 42 at offset 0x2C78 | 1029 bytes |
embedded_file_obj0043.binc5010609b5c0f6009d7d46fa16ede696d0549fcbdde731f76705a2fd32aedc3d |
pdf-embedded-file | PDF EmbeddedFile object 43 at offset 0x2E91 | 1941 bytes |
embedded_file_obj0044.bin3dd68f00f4fcb366a2a3a17c65cb2626eeddf5ea5713302d374310561d810169 |
pdf-embedded-file | PDF EmbeddedFile object 44 at offset 0x330B | 144 bytes |
embedded_file_obj0045.bin10c03f88a5f0a0833dc5b2c8ac295b3a3c6f65e23889eb8cc1dc6fe29bf7f275 |
pdf-embedded-file | PDF EmbeddedFile object 45 at offset 0x33B7 | 77 bytes |
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