Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb5cceac45b90dce…

MALICIOUS

PDF

99.9 KB
MD5: 99611c60bd91096089cca7a22983aea7 SHA-1: a1f826b9373bdc993b68836a4880293e9e05c2bd SHA-256: fb5cceac45b90dce2fb2d1d088e21dbae4cfb9e5b71122add3b4d51a604f8333
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. The XFA form contains executable script which is likely responsible for delivering the exploit payload. The embedded file and script heuristics confirm the malicious nature of the document, aiming to compromise the user's system through an unpatched reader.

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
df61863a9a0f165102dd2b745900b87f7e496aa4961a13797320cb1cfd227a3f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101588 bytes

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