Malicious PDF — malware analysis report

Static analysis result for SHA-256 2201639e8e964018…

MALICIOUS

PDF

111.4 KB
MD5: 05f1e936f1efe0867c8dd7a32c350e93 SHA-1: 7b9c3df31c942fd055494ccb8e3d9543dca64637 SHA-256: 2201639e8e9640182001cfce39fb128db60e92a84733d99f5d67376401deab82
248 Risk Score

Malware Insights

The PDF file contains an XFA form that leverages the CVE-2010-0188 exploit, targeting Adobe Reader. The embedded script payload, detected by ClamAV as 'Pdf.Exploit.Agent-6136306-0' and its extracted artifact as 'Js.Exploit.HTML-27', indicates the document is designed to deliver and execute malicious code. The primary attack vector is likely through a user opening a malicious PDF attachment.

Heuristics 7

  • 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
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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_00000238.bin
6898ee115a6671289092ef4253eeabb1d83da04a34525322b33e3f0595551106		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113399 bytes
Detection
ClamAV: Js.Exploit.HTML-27
Obfuscation or payload: unlikely

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