Malicious PDF — malware analysis report

Static analysis result for SHA-256 67dcca28e13f1782…

MALICIOUS

PDF

99.8 KB
MD5: c6e889d40190c9ebb2b60f1ff877c83c SHA-1: 6c57ce0d006b095fd42ffc6d0e3b925661d476c5 SHA-256: 67dcca28e13f1782973a34cf99d0aadf8f38410921564d158b8b35b9c4d8714a
116 Risk Score

Malware Insights

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

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability, a known exploit for Adobe Reader related to XFA forms. This exploit is designed to achieve arbitrary code execution, typically used to download and run additional malicious content. The ML classifier strongly indicates maliciousness, and the embedded file heuristic further supports the presence of a secondary payload.

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
e24dc4608dc82be655899f2c310ed4fa67957a71f06cd173973c49230a164cc3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101467 bytes

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