Malicious PDF — malware analysis report

Static analysis result for SHA-256 16772bc5d189d38d…

MALICIOUS

PDF

99.3 KB
MD5: 34adce2b644f4e7fca4c2d2743951e04 SHA-1: 7b0c9437255f7311601cc8847aadaab976ad2e11 SHA-256: 16772bc5d189d38db2dd6738f5a1a2054f0dd50b29758265240ed3381eeae8e0
116 Risk Score

Malware Insights

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

The sample is a PDF document that exploits CVE-2010-0188, a known vulnerability in Adobe Reader related to XFA forms. This exploit allows for arbitrary code execution, which is often used to download and run additional malicious payloads. While the document body and embedded scripts are heavily obfuscated, the critical heuristic firing confirms the exploit's presence and intent.

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
4c1a971d9041aa05e1203d0f45946441eb4795fa392afa277c82e9a9135300a6		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 100945 bytes

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