Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e813acd142fbc34…

MALICIOUS

PDF

100.0 KB
MD5: da4b0a464e44e6dcb8606d5513685063 SHA-1: 2bbb2d9346ee7404c6cbb20bc15facdbbe9bb0b5 SHA-256: 6e813acd142fbc34102af609ae2fdf3aa0611d25ee4d7c664667437568e09648
116 Risk Score

Malware Insights

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

The sample is a PDF document that contains an embedded XFA form, which is known to be vulnerable to CVE-2010-0188. The heuristic firings confirm the presence of an embedded file and a script payload within the XFA structure. This indicates the document is designed to exploit this vulnerability to achieve code execution, likely for downloading and running a secondary malicious 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
93d2493e80b92e1a2fb1fbc6582dbf9eca9d22b3f8e5718148d2c7fc729b05a2		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101614 bytes

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