Malicious PDF — malware analysis report

Static analysis result for SHA-256 640448f0f06d3ed2…

MALICIOUS

PDF

99.5 KB
MD5: b95539ebf6a6d50dc459b2cce292dbe5 SHA-1: 13a87a840d147d01655eaf8762916365eec99b6f SHA-256: 640448f0f06d3ed26eb05978467281de7f228baa72819baf5ff754bfff874a39
116 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188, a known vulnerability in Adobe Reader's handling of XFA forms, to achieve code execution. The embedded script payload and ML classification strongly indicate malicious intent. The exploit likely serves to download and execute a secondary payload, although the specific content of that payload could not be determined from the static analysis.

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
17f9a9aa24112030f4f8ed54979e7edffcd6bfc38ee0c7f4a27cc8995d379114		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101146 bytes

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