Malicious PDF — malware analysis report

Static analysis result for SHA-256 2465bb3811ae231f…

MALICIOUS

PDF

99.6 KB
MD5: da0d730f1088d1b0cfc1e4ad8e636b83 SHA-1: 2c863bc9d6ce51c17673f91662677b0f0737b4e7 SHA-256: 2465bb3811ae231f63bb8dd37ec4be4239ed13d6abbc419837bebb6cda85cec1
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious PDF T1059.001 Command and Scripting Interpreter: PowerShell

This PDF file exploits CVE-2010-0188, a vulnerability in Adobe Reader related to LibTIFF XFA image parsing. The presence of XFA forms and embedded script payloads indicates an attempt to execute arbitrary code upon opening the document. The embedded script likely attempts to download and execute a second-stage payload, though the exact nature of the payload is not discernible from the provided evidence. The embedded URLs are related to XFA schema definitions and do not appear to be directly malicious.

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
3dd223b2839a66696ce9a3902b905871d1ab8b867b3f57fd352cb832e9e7f762		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101251 bytes

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