Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a72f7034aa4c1be…

MALICIOUS

PDF

99.9 KB
MD5: fcc615994df0752cf35a13797368aff1 SHA-1: 8346a38e4de6d28473ecc8f2f1e45416415ed1be SHA-256: 5a72f7034aa4c1be2d5ac5a728de41f47a3e2d32ebe74572a6f5d61ea159800d
116 Risk Score

Malware Insights

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

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component, which is designed to execute arbitrary code. The ML classifier strongly indicates maliciousness. While no specific family is identified, the exploit technique is clear.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/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
a27009e3b1d8f70d69a522de802bc268f412cbb5d4d948fd2df347d9db4ef470		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101590 bytes

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