Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ffc99e0d635d856…

MALICIOUS

PDF

79.9 KB
MD5: 36b8a4111d2c1075ca2851a0c04a6a15 SHA-1: 7a83b52e424ebfd67cb55ed2dd1d34086ef2ed39 SHA-256: 5ffc99e0d635d856db1fa7cf44723e644abab55a1ea1cfc21eefac6b68fd1029
116 Risk Score

Malware Insights

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

This PDF file is identified as malicious due to the critical heuristic firing for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. The presence of XFA forms and embedded script payloads further supports its malicious nature. The exploit likely facilitates the execution of arbitrary code, potentially leading to the download of additional malware.

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
474494e21c5b0fd92909305df3f6876659187e7bc24409e6a646f6f07890982f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 81022 bytes

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