Malicious PDF — malware analysis report

Static analysis result for SHA-256 46d437bd339359ac…

MALICIOUS

PDF

12.8 KB
MD5: 799e5b74cc58f209c02c01d2e340a373 SHA-1: e4c3909eb754d0c98bb1a50b1aa7875ab15e9584 SHA-256: 46d437bd339359acab16419850fb8342bc75045183f3cfacea1986dc8fa7505d
188 Risk Score

Malware Insights

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

The PDF file contains an XFA form which is known to be vulnerable to CVE-2010-0188. The embedded script payload, approximately 12KB in size, is likely responsible for executing the exploit. The embedded URL, while not directly malicious in reputation, is part of the XFA structure and may be used in conjunction with the exploit.

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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000384.bin
5094247584b8196b70de21c89125fd3ce33eae797f90bed02010ee203737bce9		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes

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