Malicious PDF — malware analysis report

Static analysis result for SHA-256 efbf43f2ed3b4f0a…

MALICIOUS

PDF

78.9 KB
MD5: 22c3366b13e3154765a6aff556216642 SHA-1: d662e673613578c7d89ebef610d98af43b5a7f14 SHA-256: efbf43f2ed3b4f0a2521424ef91893ea110a869cd7d95e74b7d584c78f9e039b
138 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image processing. The embedded XFA form contains executable script, indicating an attempt to leverage this vulnerability for initial code execution. While no specific family is identified, the exploit suggests a downloader or dropper functionality. The embedded URLs are likely related to the XFA template or data, but their reputation is unknown.

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.
  • 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.
  • 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
3cddcc760a341cee1292f3ae1a36dd9c5231ff6d4b57d0425a0cddd1a0d64cd4		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80084 bytes

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