Malicious PDF — malware analysis report

Static analysis result for SHA-256 999aba84b9e98c1f…

MALICIOUS

PDF

79.9 KB
MD5: e480ab079465dbe0d88c56bb5caf54bd SHA-1: 8a397b78af476a4747c75dcd21201fd7e6417d1a SHA-256: 999aba84b9e98c1f1316d3545622e85503529c836de6ab4b71ac909bcd4668e6
190 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059.001 PowerShell

The file is a PDF document that leverages XFA forms, a known vector for exploiting vulnerabilities in Adobe Reader. Heuristics indicate a critical vulnerability (CVE-2010-0188) related to XFA image exploitation and an embedded script payload. The embedded script is likely responsible for executing the exploit, leading to a malicious outcome. The ClamAV detection further confirms 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://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
60feb85a4374ebc6cc9cd7ed53e95d356e4902f98d4c4742e55ff94ee5abf5d7		 pdf-embedded-script PDF raw stream script payload at offset 0x288 81057 bytes

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