Malicious PDF — malware analysis report

Static analysis result for SHA-256 f31e1d9e7eb9e8c8…

MALICIOUS

PDF

64.2 KB
MD5: 1973d03ba721dd216ac56daf16106242 SHA-1: 6942e3d2f23473b94f738be673307de10b10126f SHA-256: f31e1d9e7eb9e8c86c35cb399511e0f93f360f309c4be732439c47890e3e59e0
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded XFA (XML Forms Architecture) data and triggers the CVE-2010-0188 exploit, which targets a vulnerability in Adobe Reader's handling of LibTIFF images within XFA forms. This exploit is designed to allow arbitrary code execution. The embedded script payload within the XFA form further supports the conclusion that the document is intended to deliver a malicious payload. The specific URLs extracted are related to XFA schemas and Adobe, but their reputation is unknown or benign, suggesting they are not directly involved in the payload delivery.

Heuristics 6

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • Embedded script payload in PDF stream medium 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 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 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
c9960723ea3d9d3f24758991f3cb12555cc6218a7a7ab47c60cd80b704ad1ee9		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 65000 bytes

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