Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea823fe807de73f…

MALICIOUS

PDF

79.6 KB
MD5: 026b11fb213deeb3bfa0a2503d3163c7 SHA-1: 479fd0605ba2bc52dc3a825cebb6551182470005 SHA-256: 8ea823fe807de73fb8e76c0b5b816d11644b1cea8f4fa1e51d64b09e592d45f5
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability in Adobe Reader's XFA form processing. The embedded script payload, detected by ClamAV as Pdf.Exploit.Agent-6136306-0, is indicative of a malicious exploit designed to compromise the user's system. The attack pattern is consistent with exploiting known vulnerabilities in PDF readers to execute arbitrary code.

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://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_00000288.bin
67ff89fad32282ad22c4e0d4cb7eb9c20a5690922fd25803ea0802dd95861911		 pdf-embedded-script PDF raw stream script payload at offset 0x288 80777 bytes

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