Malicious PDF — malware analysis report

Static analysis result for SHA-256 934d6cfc1a98b0e9…

MALICIOUS

PDF

78.6 KB
MD5: f1f29bad88f6ae904931269050893e15 SHA-1: f8efd97b923c22598cce49226c96294f7a46d72f SHA-256: 934d6cfc1a98b0e963c4428824f448b0080ec1b36b3837d1570c12d1fef9b9ad
138 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1566.001 Phishing: Spearphishing Attachment T1204 User Execution

The PDF file contains embedded XFA forms and scripts, triggering heuristics for PDF_XFA, PDF_EMBEDDED_SCRIPT_PAYLOAD, and PDF_XFA_SCRIPT. A critical heuristic identifies the CVE-2010-0188 exploit, indicating the document is designed to leverage this vulnerability in Adobe Reader. The embedded script payload is likely responsible for executing the exploit, leading to the download or execution of a secondary malicious payload.

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
f4c47f57619756bd525608bb407744abac3c886ff64c38fdd208dbc01676f38e		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79782 bytes

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