Malicious PDF — malware analysis report

Static analysis result for SHA-256 7254b77f280f46ad…

MALICIOUS

PDF

78.5 KB
MD5: 9c898409f3280e748964dabd3fb29ea6 SHA-1: 71bf991268d8398662e1bd697293f38825679d74 SHA-256: 7254b77f280f46adf0e5eb291c1db1887d25af847e64cb8f16b279b72eb758fa
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF sample contains a critical heuristic indicating exploitation of CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit is designed to achieve code execution. The presence of an embedded script payload further supports the likelihood of a malicious action, such as downloading and executing a secondary stage. The ML classifier strongly flags this PDF as malicious.

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
3a94fb9c9c1c8f63be0ac9ec5b0e7f1583261c1648c8547b0c9cebd127e0eb22		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79618 bytes

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