Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b323148f2495387…

MALICIOUS

PDF

12.3 KB Created: 2010-08-01 04:20:19 Authoring application: daceWis muleDoc
MD5: aa5ee1b3a3502bf0836aabdf3547adcd SHA-1: c63321adfc4776caef6569877f1354fa3a070027 SHA-256: 7b323148f249538755a9e80e4b1c36fa654a817a1ad98c82afcab019da5963de
116 Risk Score

Malware Insights

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

The sample is a PDF document that triggers the CVE-2010-0188 exploit, which is known to be used for client-side code execution. The ML classifier also strongly flagged this PDF as malicious. The exploit likely serves to download and execute a secondary payload, although no specific URLs or scripts were directly extracted from the document body.

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

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x17AB 84 bytes
embedded_file_obj0009.bin
24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0		 pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x185C 228 bytes
embedded_file_obj0010.bin
ae49e7683e51698d291d5e586a1b627fe139a2128f10e0b8c174783b47d4aa65		 pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x194D 1112 bytes
embedded_file_obj0011.bin
c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460		 pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x1C0D 199 bytes
embedded_file_obj0012.bin
76bae2f448965f03f51c6fea236da9dd57e0e33795c9935feba8d47059d22b36		 pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x1D00 54876 bytes
embedded_file_obj0013.bin
e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876		 pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x2A85 77 bytes
embedded_file_obj0014.bin
92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a		 pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x2B2C 56 bytes

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