Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b0c31742214c00…

MALICIOUS

PDF

12.8 KB
MD5: e88c8f5b51aad660cd3297d6d9823660 SHA-1: a532b6f39108b6ec962e1c3b92c41b024dc6dcb9 SHA-256: a8b0c31742214c00510e48e08f53a57677b2ca9ccec458ed5b74d85068c3c885
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1059.001 Command and Scripting Interpreter: JavaScript

The sample is a PDF file that leverages an XFA form to deliver a malicious payload. Static analysis identified a critical heuristic match for CVE-2010-0188, indicating an exploit targeting Adobe Reader. An embedded script was also detected within the XFA form, which is likely responsible for executing the exploit. The embedded URL is likely part of the XFA template structure and not directly malicious.

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
afcd28d09944df61f1c6e380e5739cfaa45e08b41224b581771a4766b42bff97		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12312 bytes

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