Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bac3c97b27aa7cb…

MALICIOUS

PDF

12.7 KB
MD5: 5c40718b4ff3021dbee201f077adb3ab SHA-1: 7993f698fba4a4089d3d592a20beabad1ca300f1 SHA-256: 4bac3c97b27aa7cbc69a446f428c8f76b4de7346dd10a0ee025a9addd241636f
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting XFA forms. Heuristics indicate an embedded script payload within an XFA form, suggesting the script is responsible for executing the exploit. The embedded URL is likely related to the exploit delivery or a secondary payload stage.

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
c83d264b2d9bee69f5ee39a9a8fb513b73484f609fc4883bd2220cbdc4b40eb0		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12276 bytes

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