Malicious PDF — malware analysis report

Static analysis result for SHA-256 86a1f98ae0a46f29…

MALICIOUS

PDF

7.1 KB Created: 2010-08-01 04:20:19 Authoring application: daceWis muleDoc First seen: 2013-06-07
MD5: 864f41622159db7dc27b783d5f927b6c SHA-1: 0a99fc64c06c9489c70ab2d668824122109f8daa SHA-256: 86a1f98ae0a46f29a852fe116893cafc49b72aa31d4babb48cdccfdd1b6e8205
110 Risk Score

Malware Insights

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

The PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader's XFA form processing. This exploit is designed to achieve arbitrary code execution, which is typically used to download and run additional malicious content. The ML classifier strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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 info 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xfdf/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0015.bin pdf-embedded-file PDF EmbeddedFile object 15 at offset 0x2CA 84 bytes
SHA-256: d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777
embedded_file_obj0014.bin pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x37C 228 bytes
SHA-256: 24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
embedded_file_obj0013.bin pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x46D 1106 bytes
SHA-256: 612c45a703df6e2b18d1df3ce9606e15622e931a852ebdb929d42037144e908b
embedded_file_obj0012.bin pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x72B 199 bytes
SHA-256: c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
embedded_file_obj0011.bin pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x81E 54876 bytes
SHA-256: 6e8fc4a2908f0e74d68c811656d76e3f0d3dfaad4da5630ef4c72ab579408d99
embedded_file_obj0010.bin pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x15B6 77 bytes
SHA-256: e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
embedded_file_obj0009.bin pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x165C 56 bytes
SHA-256: 92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a

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