Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e50b21d806429ff…

MALICIOUS

PDF

79.2 KB
MD5: ffe966f2056fd3340fba068c2e630871 SHA-1: afd0867d9b7de8ae5d21b0f6f31776ddc7949719 SHA-256: 3e50b21d806429ff577965287a58cc06d521b57d380b981ba565656df7a0df71
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell T1566.001 Phishing: Spearphishing Attachment

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability in Adobe Reader, specifically targeting XFA forms. This exploit is designed to execute arbitrary code, likely to download and run a secondary payload. The presence of an embedded file and script payload further supports the malicious intent. The embedded URLs, while not directly malicious, are related to XFA schemas.

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
402001be17bc8190a8af466865c3ff06435ffe1a746e92ee8a9b9ad4698f47eb		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 80342 bytes

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