Malicious PDF — malware analysis report

Static analysis result for SHA-256 01f679bf2bd17bbe…

MALICIOUS

PDF

99.5 KB
MD5: 470d3b190b69e982cd7e03006e9a2d1f SHA-1: 198a53b77fee1f026175085313da724e408c1c57 SHA-256: 01f679bf2bd17bbeecdcadf4e2120f05399364f59c781cb041229fd8c44c5b50
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier and heuristics indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. The presence of an embedded file and script payload strongly suggests the PDF is designed to exploit this vulnerability to download and execute a secondary malicious payload. No specific family could be identified, but the exploit vector points to a client-side execution attack.

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
4ebbf213af9aa4cd17c0c9c461aecdfb6b8b5b41350dabe73fc00df361219aaa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101186 bytes

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