Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94757458ed6f5bc…

MALICIOUS

PDF

99.9 KB
MD5: ff2189ba9d0b4e228910f7871884e9b2 SHA-1: 7f8b6eabd1f6493be5b9aa812205a74bc4fbdf40 SHA-256: d94757458ed6f5bc77d3f9ac597edb5167d892f94a0d2633d4a7d605f76b6502
96 Risk Score

Malware Insights

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

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA forms. This exploit allows for arbitrary code execution. The PDF also contains embedded script payloads and embedded files, suggesting it's designed to deliver a secondary payload. The embedded URLs are related to XFA schemas and Adobe, but their reputation is unknown or benign, providing no direct IOCs for malicious infrastructure.

Heuristics 5

  • 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.
  • 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
5620eb451c0ab19da5975f55bfd1e7db0e15148002875c85e9aa27e04e22b33c		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101541 bytes

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