Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc0d804a1f2cc88e…

MALICIOUS

PDF

12.6 KB
MD5: 533cffb0c57cc16cc061e87f5fde7111 SHA-1: 4b530d6f5b2e16c3bf5f5e1d419cd50a7d87d859 SHA-256: bc0d804a1f2cc88e3ad7431aa3f68d4b04691049e11bd0677e4d110cd64b926d
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The PDF file contains an XFA form that exploits CVE-2010-0188, a known vulnerability in Adobe Reader's handling of LibTIFF images within XFA forms. This exploit is designed to download and execute a malicious payload. The embedded script and the ClamAV detection further confirm its malicious nature.

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
2e6f6e73b86edf7d1dca19987a8b7db91794236a6b4fa8329792db6c7f2440f5
pdf-embedded-script PDF raw stream script payload at offset 0x359 12209 bytes