Malicious PDF — malware analysis report

Static analysis result for SHA-256 03852fe550f4b4f4…

MALICIOUS

PDF

99.7 KB
MD5: 2b1b9db8c560cd5fad4bd0ebbdb5df2e SHA-1: 9c670b81ba7f5345c1764755492c509310689ac2 SHA-256: 03852fe550f4b4f4d23f8c2e044acb97a8c4e5e995b6feba4892da8c7e5828d3
116 Risk Score

Malware Insights

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

This PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's XFA forms. The exploit targets a known flaw in the LibTIFF library, which is often used for image processing within XFA forms. The critical heuristic firing indicates that the decoded XFA payload was extracted, suggesting the exploit attempts to gain code execution. While no specific malicious URLs or scripts were directly extracted, the nature of this exploit typically leads to the download and execution of a secondary payload.

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
c5505ec093dde84170bec96b8773de16950fb4f3cf4999bf6c84b16957a286fa		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101374 bytes

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