Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd694c4176fe1bbb…

MALICIOUS

PDF

75.8 KB
MD5: 2bfd77348b2e5ba57965fc148e01acb8 SHA-1: a4c1fa41d3980c5793b9dcff739edf7d119f8c54 SHA-256: dd694c4176fe1bbbb4008ff4e224ba24df802a8407ccf28186abde90199adadc
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA form functionality. Heuristics indicate an embedded script payload within an XFA form, strongly suggesting the execution of malicious code. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured by the exploit itself. The presence of XFA-specific heuristics and the ClamAV detection further confirm its malicious nature.

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.
  • ClamAV: Pdf.Exploit.Agent-6136306-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-6136306-0
  • 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.
  • 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_pdf_script_00000286.bin
44d93aecad0c744e10be4af2710ff3a56fc11b16cff39352776f52744d949576		 pdf-embedded-script PDF raw stream script payload at offset 0x286 76864 bytes

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