Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bb30ff20f6cf14…

MALICIOUS

PDF

99.9 KB
MD5: 0745a01664dd6fa0ca890b29972cd917 SHA-1: d4b9ba9323e4797e795c1167bfd4e53d66667aea SHA-256: 94bb30ff20f6cf14413362084bd06c6d79483c507a1eab3d3b1c781706131251
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell T1204.001 Malicious Link T1059.003 Windows Command Shell

The PDF file contains embedded scripts and is flagged for exploiting CVE-2010-0188 in Adobe Reader's LibTIFF component. The XFA form structure suggests an attempt to leverage this vulnerability to execute arbitrary code. The embedded scripts likely facilitate the download and execution of a secondary payload, although the exact nature of the payload is not discernible from the provided evidence. The embedded URLs are related to XFA schemas and Adobe, but their specific role in the attack is unclear.

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
419d0a146428f815983b30afb87ae2e7769e1144c20e407c91eb1b622cd142c7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101514 bytes

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