MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File: User Execution
T1059.007 JavaScript/VBScript
The file is a PDF document that leverages XFA (XML Forms Architecture) to deliver a malicious payload. Critical heuristics indicate the presence of XFA JavaScript heap spray exploit code and risky executable script within the form. This suggests the primary attack pattern is to exploit a vulnerability in the PDF reader's XFA processing to achieve arbitrary code execution. The ClamAV detection further confirms its malicious nature. No specific family could be identified, but the exploit method is clear.
Heuristics 7
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XFA form contains risky executable script high PDF_XFA_SCRIPTPDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
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XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAYPDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
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ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
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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/
- 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.bineb962d02d93a7ee30611b4b70d9b1de0b3fc15ee2b1474fd4ba82020d3a0599a |
pdf-embedded-file | PDF EmbeddedFile object 8 at offset 0xC8 | 12273 bytes |
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