Malicious PDF — malware analysis report

Static analysis result for SHA-256 23005db7d0ff3e40…

MALICIOUS

PDF

99.9 KB
MD5: f2bcb1d8c8e6492ba385bc1ae759da2b SHA-1: 647164d5f27384df3185451e7689151e1d49c411 SHA-256: 23005db7d0ff3e408a141fcadb3701377dad75a1c8571b3674dd3e9b0fcc9d48
138 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 file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA images. The PDF contains embedded scripts within an XFA form, indicating an attempt to execute malicious code upon opening. The embedded scripts likely aim to download and execute a second-stage payload, though the exact functionality is obscured. The presence of XFA forms and embedded scripts points to a common delivery method for exploits targeting PDF readers.

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
bcf566788960b24b791afac4a2d6c36f35f30f3f6330a78a83e8d9a2af6d809d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101545 bytes

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