Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e987ecef898c92…

MALICIOUS

PDF

99.7 KB
MD5: d09562800c7b4b4071d8ebfc0ec0939e SHA-1: 55223ba659f6119a5fb42e9bffd06a79ea51b3f9 SHA-256: c5e987ecef898c9289b40a6d1f8d5db33797b3931b1798e8a4cbaf38df8cc060
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter T1190 Exploit Public-Facing Application

The PDF file contains embedded XFA forms and scripts, indicating it is designed to exploit vulnerabilities. Specifically, the CVE-2010-0188 heuristic firing confirms the use of a known Adobe Reader exploit. The embedded script payload is likely responsible for executing the exploit, leading to the download or execution of a secondary malicious payload. No specific family could be identified, but the exploit vector is clear.

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
fbaef99aa4f0bb57c550f837b9797ffcc94ff7eee6bf0b53f82b654a536d2a2f		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101323 bytes

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