Malicious PDF — malware analysis report

Static analysis result for SHA-256 8449c9ab0812ccba…

MALICIOUS

PDF

99.5 KB
MD5: d813e3506ca0cd4df33a124f837b2133 SHA-1: b67497a6beb2ef3128c84ff576cb3d72a6c319ca SHA-256: 8449c9ab0812ccba35ee5dac139d9909ebdedeb945be55533929195c5a0a9866
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 contains a critical heuristic for CVE-2010-0188, an exploit targeting Adobe Reader's XFA forms. This exploit likely facilitates the execution of embedded JavaScript, which is often used to download and run additional malicious content. The embedded URLs are benign, but the core functionality relies on the exploit.

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
3ca6a5d9f8a448df56e3b624163cb1f42315ac9c1aca35ea7e320e5fe1647bae		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101191 bytes

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