Malicious PDF — malware analysis report

Static analysis result for SHA-256 de922d97accc6d1e…

MALICIOUS

PDF

12.6 KB
MD5: 1c4c486da01450f1cba8023a82bf7f93 SHA-1: 6ecfb4fb881658d941b5785a2ef6dfaaedb68949 SHA-256: de922d97accc6d1e6c35e7d8b57f03d7e22abe4ad904d567481c11b3625047ea
188 Risk Score

Malware Insights

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

The sample is a PDF file that exploits the CVE-2010-0188 vulnerability in Adobe Reader via an XFA form. The embedded script is likely responsible for executing the exploit payload. The embedded URL is likely part of the exploit chain or a command and control beacon.

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
4e8f068d2cb2cd4da1d8bf3027d3c1b3438a5b8729e8e7caa48ecb61a13752bf		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12185 bytes

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