Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2ae52eca2ea2b8…

MALICIOUS

PDF

79.0 KB
MD5: 7cd45f4bc64b7779168a5bc4aec76293 SHA-1: 23b1d60dcb8cca142243395fef2addaf9e6850bf SHA-256: 7a2ae52eca2ea2b8252f2ac8e1b5ead4a74016c5af09a3ea1c532f44b89892d5
136 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file exploits the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component to achieve code execution. The presence of XFA forms and embedded script payloads further indicates malicious intent. The script appears to be designed to download and execute a second-stage payload, though its exact functionality is obfuscated.

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
ac2ad0811839d86f04b9cc60afb3b47cc8dbb8f7257f38a61f7acde2bc2daa02		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80100 bytes

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