Malicious PDF — malware analysis report

Static analysis result for SHA-256 65841079dde2622c…

MALICIOUS

PDF

99.7 KB
MD5: 24b38e34ad16c392488d463338db1a2b SHA-1: b5048956964f2235d51a4f4568cf798f8ef097ec SHA-256: 65841079dde2622c050c8808c0ace803a24e82feab3b177c994c5d2184582381
116 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for CVE-2010-0188, indicating exploitation of a vulnerability in Adobe Reader's LibTIFF component via XFA forms. This exploit is designed to execute arbitrary code, and the ML classifier strongly flags the PDF as malicious. The presence of an embedded file further supports the likelihood of a malicious payload delivery.

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
fc4d810c31f2963f92e81129cb9d8466350a8695a291a9a09a6de765130882a8		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101302 bytes

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