Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef4bf662bd274def…

MALICIOUS

PDF

101.8 KB
MD5: daa545c2c1cc9ebc92f6e875ac16c0c6 SHA-1: fb0ec8c88b9f69c7c79d8ecbfc58bfec160e58a6 SHA-256: ef4bf662bd274def9fbbadfcfa2ba9e110df8d881f843f6676345234c2a57f3e
188 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an XFA form and triggers the CVE-2010-0188 exploit, indicating it is designed to compromise systems running vulnerable versions of Adobe Reader. The embedded script payload, likely responsible for further malicious actions, was detected by ClamAV as Pdf.Exploit.Agent-6136306-0. The exploit targets client execution via a known vulnerability.

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_00000346.bin
ff267218b648f369684274ea4788e3707b2928f13f046a735d3e78ee5fb9023a		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103497 bytes

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