Malicious PDF — malware analysis report

Static analysis result for SHA-256 941a65d985d011a7…

MALICIOUS

PDF

79.4 KB
MD5: 04f2533e9a5961f2e96f87de5b11b44b SHA-1: e8580f850e221bc3fd646f44645b8fb2d0673a7f SHA-256: 941a65d985d011a75dd2bc7d524034526ace79a395136ea59c8d1a9afa9780ea
196 Risk Score

Malware Insights

The PDF file contains embedded XFA forms and scripts, triggering critical heuristics for CVE-2010-0188, an Adobe Reader LibTIFF exploit. This indicates the document is designed to exploit a vulnerability upon opening. The embedded file and script payload suggest the document's primary purpose is to deliver and execute a secondary malicious payload, likely for further system compromise. The presence of XFA forms and embedded scripts points towards a sophisticated attack vector.

Heuristics 7

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • Embedded script payload in PDF stream medium 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 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 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
188dfa12b62163203a8195331fe1e520060e0934070921a19a8ac8d7465dcebd		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 80576 bytes

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