Malicious PDF — malware analysis report

Static analysis result for SHA-256 28ea8fed494c5d30…

MALICIOUS

PDF

16.2 KB
MD5: c37d0c38a9968ec0102fd5c859c32836 SHA-1: 0445986e0a23c6b1ff934e04723a28f189b5a477 SHA-256: 28ea8fed494c5d30b03fccae05be3e7f547b520939d4fa118a6f2154c39ff87c
188 Risk Score

Malware Insights

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

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF component. The XFA form within the PDF contains an embedded script payload, which is characteristic of exploit delivery. The embedded script is likely responsible for executing the exploit and potentially downloading a second-stage payload, although the script itself was not detailed enough to reconstruct specific actions.

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_00000359.bin
4c3944cbe263771fa9b8f2d1e89f6a655f8e4f1f5f2b9ef894657e7e26a63ee4		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes

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