Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e23fd8aff06f471…

MALICIOUS

PDF

99.5 KB
MD5: bf9cf2b29f10fff10d2be5b0b6d268af SHA-1: 74526f1c3c4eed085cd8efd776020a2e1b4ec197 SHA-256: 7e23fd8aff06f471822d621f64efa9ac21d48d816ab7dd3d075994aa7430e408
116 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit is designed to achieve arbitrary code execution. While no specific malicious script or URL was directly extracted, the exploit's nature strongly suggests it's used to download and execute a secondary payload. The presence of XFA forms and embedded file heuristics further supports this conclusion.

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
1b7e9650e90638a3277d02d24cb1f2b5b310a6eb6c783cb6bf5f6f8acaaacbc3		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101089 bytes

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