Malicious PDF — malware analysis report

Static analysis result for SHA-256 458d9fd8c0df5201…

MALICIOUS

PDF

111.3 KB
MD5: db34f5c9dd782ca76e96e27c9d0cec0f SHA-1: d6726eb38ddd67e669ab69dab9c819be7e546908 SHA-256: 458d9fd8c0df520194394a12aefb333db58a67f15d2a3bb733a50e266287d3cd
248 Risk Score

Malware Insights

The PDF file contains an XFA form with an embedded script, which is a known vector for exploiting vulnerabilities like CVE-2010-0188 in Adobe Reader. The embedded script payload, detected by ClamAV as 'Pdf.Exploit.Agent-6136306-0' and its extracted artifact as 'Js.Exploit.HTML-27', is designed to execute malicious code. This indicates the document's primary purpose is to exploit this vulnerability to deliver a secondary payload.

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
63e6bbcbd4f37307e1171fd4a3e0e2b4798a48dbd096b26ff23c33dd11476d54		 pdf-embedded-script PDF raw stream script payload at offset 0x238 113267 bytes
Detection
ClamAV: Js.Exploit.HTML-27
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.