Malicious PDF — malware analysis report

Static analysis result for SHA-256 734c82cdc0839eb3…

MALICIOUS

PDF

91.5 KB
MD5: c36d578fff3dac7118b083a06e51f58b SHA-1: 872fb474239a02f2b37b906c72c885391a8b5b39 SHA-256: 734c82cdc0839eb36a5072b80109231fe778470c45e0b8d585b9dbbf4b4f3f83
176 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF document is malicious, leveraging the CVE-2010-0188 exploit targeting Adobe Reader's handling of XFA forms. The exploit likely downloads and executes a second-stage payload, as indicated by the embedded script payload marker and the ClamAV detection name 'Pdf.Exploit.Agent-6136306-0'. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Embedded script payload in PDF stream low PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF 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.
  • Embedded URL info EMBEDDED_URL
    One 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.

FilenameKindSourceSize
embedded_file_obj0008.bin
6c25065b596459c5a85e0044419e4a91b37d3d844588ef2182ca06a8c844016b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 92911 bytes

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