Malicious PDF — malware analysis report

Static analysis result for SHA-256 69dfabcd9379fac5…

MALICIOUS

PDF

4.3 KB Created: 2011-04-05 23:46:28 Authoring application: bub lob
MD5: 946fdcb665c126ffeeb465fd7ed26800 SHA-1: 6ba7f11befc22ea7cc2877ad18f71d0ed9760558 SHA-256: 69dfabcd9379fac5593a57fee282a307a6fc8735192c46f7852b0d12aabae001
156 Risk Score

Malware Insights

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

The file is a PDF document that contains an XFA form, which is known to be vulnerable to CVE-2010-0188. Heuristics indicate that the XFA payload is executable and flagged by a machine learning classifier as malicious. The exploit likely leads to the execution of a secondary payload, although no specific download URLs or scripts were directly extracted.

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.
  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF 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.
  • 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
456c81fc8f73eeb01cba6cdd7d3a0edd86169ff23d41fad89ce869ce60fccf60		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x167 13030 bytes

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