Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f6f11d2902f2580…

MALICIOUS

PDF

99.7 KB
MD5: c7f62f76bc50395e38298ccd7544cf45 SHA-1: 92981d1d0b42812e20e263235b9bd14adb3486f4 SHA-256: 5f6f11d2902f25807b254dd64b1454b6a01cbcbbfbec64dce5db4b059bb5db10
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier. It exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms and LibTIFF parsing, to achieve code execution. The PDF also contains embedded script payloads, further indicating malicious intent. No specific family could be identified, but the exploit vector suggests it's designed to compromise the user's system upon opening.

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
487182f772efe59a12be60ea6d0aa1786f6bf17a721359f3db5947d41e3bff30		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101313 bytes

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