Malicious PDF — malware analysis report

Static analysis result for SHA-256 817518ab718c992a…

MALICIOUS

PDF

99.7 KB
MD5: 4c78ee46e21ace7e986f2ed29db5eed8 SHA-1: 3de353357efac9eb8bea923e9b1710eabb4b031d SHA-256: 817518ab718c992a5cc5a6b1df3ab782268b848f72753179cea0c7972b5b00c3
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier and exhibiting characteristics of an exploit. Specifically, it triggers the CVE-2010-0188 vulnerability related to Adobe Reader's LibTIFF XFA handling, indicating an attempt to execute arbitrary code. The presence of embedded script payloads further suggests the execution of malicious actions, likely involving the download of additional malware.

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
7db929813e7bfea869c108e7fdd5109b7097ed7ba52fe67cb7a7851fbbf11300		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101372 bytes

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