Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53640e15537908e…

MALICIOUS

PDF

12.8 KB
MD5: 2aa7c75f2e09ed13cbea544bea212a35 SHA-1: 2c313a844fd3ce3a7a22c9a8d81e00783f2d4c0b SHA-256: c53640e15537908ed46e918bccf32d93365bb32b07976c1be48cc7999701e141
190 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 via an XFA form. The embedded script payload, approximately 12324 bytes, is likely responsible for executing the exploit. The script's content is heavily obfuscated, but the presence of XFA form elements and the specific CVE firing strongly indicate an exploit attempt. The embedded URL is likely related to the exploit infrastructure.

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
b963e88a2fee453a99f4b58b9fc4115753a145c8560814d7c021fd8098ad28ab		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes

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