Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c4ad97e7c3b4ea…

MALICIOUS

PDF

99.4 KB
MD5: 5f5d6a252b6c80c21d4cb0e362f1105f SHA-1: ab81490f8b0d88a53eb8cec55d25a849b1c153f2 SHA-256: 78c4ad97e7c3b4eae8885054eb1abfa06c7fa1d80b33da83d8466f2985134b1e
136 Risk Score

Malware Insights

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

This PDF document exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image parsing. The exploit is embedded within the XFA form structure and is designed to execute arbitrary code. The presence of embedded scripts and the specific exploit identified indicate a malicious intent to compromise the user's system upon opening the document.

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
92215e3065d2bda4c322d6f0f27d7584cdc88ee3c83e8a4c4d7ed94e4369c09c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101088 bytes

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