Malicious PDF — malware analysis report

Static analysis result for SHA-256 84651f1e71e62da8…

MALICIOUS

PDF

99.7 KB
MD5: 80987ef3b59170854747d6d55885895c SHA-1: 6b987db7fa3153b0e539ca8c2c6caa1db6bcf7f4 SHA-256: 84651f1e71e62da811bff5edc3fcc3080ad81e4463e3d49f4bf1f09ee885105c
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 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 content. The embedded script, though heavily obfuscated, likely facilitates this secondary stage. The benign URLs present are likely decoys or standard XFA schema references.

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
88f4c15237d74e21b635bab1d8d546d9ff33435df9575bb79e45e7b021138b0c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101307 bytes

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