Malicious PDF — malware analysis report

Static analysis result for SHA-256 52d2e518b00493a2…

MALICIOUS

PDF

99.9 KB
MD5: f9bb8eee9bfafd4ebe8f13a7220e376d SHA-1: e8809c518531d324e9dfafdd102b69400b2fb8ee SHA-256: 52d2e518b00493a27293236fb7f97623b2547e27608add86a718bd7a4be32558
136 Risk Score

Malware Insights

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

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component. The PDF contains XFA forms and embedded script payloads, indicating an attempt to execute malicious code upon opening. The embedded script is heavily obfuscated, but the primary exploit vector is clear. The document body is unreadable, but the heuristics strongly suggest a malicious exploit delivery.

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
710e85d001f8919decc007903de45d76445214522b59a3d113fa5bcd0e427f31
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101573 bytes