Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed30b794a2fb7c4…

MALICIOUS

PDF

99.7 KB
MD5: a83224aa39051747582ee8ee149faad1 SHA-1: 2ce14a5f4eb98b20b3375c0a917da43e2b82fcc9 SHA-256: 5ed30b794a2fb7c4070ecbe7ca538442e1afe5adc3c0dd17030245687233e782
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, to achieve code execution. The PDF also contains embedded file objects and references to XFA schemas, further indicating its exploit nature. While no specific family is identified, the exploit vector points to a targeted attack.

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
2bb46f1cdf6304c79889afe5d2710e6faf7d8c2d59caad3b2002a124689d781f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101357 bytes

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