Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b50a93cf48ab9cf…

MALICIOUS

PDF

99.4 KB
MD5: d449db19a4dad945256177e0b841a7c5 SHA-1: 475539539236d95a923003d73d2a135825acd53e SHA-256: 5b50a93cf48ab9cf0695c4e31a275bcc8b305528e2870dc07023d9dde084433f
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The presence of an embedded file and XFA form structure further supports this attack vector. While the document body is truncated and contains no user-facing content, the exploit itself is the primary indicator of malicious intent.

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
cf110a2b4ce840689e6cb6599ceb043acec7f14ad57de4167072eb0f561fa376		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101087 bytes

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