Malicious PDF — malware analysis report

Static analysis result for SHA-256 936bf4ec9c4f246a…

MALICIOUS

PDF

100.0 KB
MD5: 9a7e7e1bbaf735808dd368cca7c03e6f SHA-1: 589ba6abc0bc0f3912656bd00297f88e439ed7ea SHA-256: 936bf4ec9c4f246a92d69630ae56f1c799454c3b4ec121aa6963ff6fe97a2740
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF and XFA forms. The critical heuristic indicates that the XFA payload was decoded from a raw stream, and a high-confidence heuristic confirms that the XFA form contains executable script. This script is likely responsible for executing the exploit, leading to arbitrary code execution on the target system. No specific malware family was identified.

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
a86e0f33d27f5e808ce9245a36c1d756557ab0f41a93cee85336e2f71414841a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101654 bytes

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