Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5e0572cb51ba5a…

MALICIOUS

PDF

99.5 KB
MD5: 8fa48b6469b62375d62bf1ce04239abb SHA-1: 2794e4bc1d19fabdcfd382ce748d42e3eadfb203 SHA-256: 5c5e0572cb51ba5ab7e0069befc5ba8c945fc53d8cbbbcbb00d204b6bd1293ff
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains an embedded XFA form that triggers the CVE-2010-0188 exploit, a known vulnerability in Adobe Reader. This exploit is designed to execute arbitrary code, typically to download and run a secondary malicious payload. The ML classifier strongly indicates maliciousness, and the presence of an embedded exploit payload confirms the attack vector.

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
77d92e7c123ce8f7c84a56f153a27f3c09171bee120acfe26d5f4a41c9f3e477		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101113 bytes

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