Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb4a0fe4a0b1d4f…

MALICIOUS

PDF

99.9 KB
MD5: 6973c2ac72efdb6504de0e25d9457ef1 SHA-1: 59057d14c95cb6ffa57a19fc96540be1c11ea170 SHA-256: 6fb4a0fe4a0b1d4f8801815a7ab1e02382ef15ef27ca66c17ecf8b7fea040dde
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 exploit likely serves to execute arbitrary code, potentially downloading a secondary payload. The presence of an embedded script payload further supports this, indicating an attempt to compromise the user's system.

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
5c4e1f01c209f4a770f5f21aaab7ccd9ae0640c87e146aaedabdf43e24dfe938		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101595 bytes

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