Malicious PDF — malware analysis report

Static analysis result for SHA-256 3673b48ad017c63d…

MALICIOUS

PDF

16.2 KB
MD5: f471c0a762409f30fdcc7271dab4ea77 SHA-1: 8f87e15413a7fb09f8e52612d071fd0367c4bb93 SHA-256: 3673b48ad017c63d014ff9c18c65b31f25eb0d37ae30fbb13129a0a1e5ef9544
188 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains an embedded script that leverages the CVE-2010-0188 vulnerability in Adobe Reader's LibTIFF component. This exploit allows for arbitrary code execution upon opening the document. The embedded script is likely responsible for downloading and executing a second-stage payload, although its exact functionality is obscured.

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
2da9ddc7764f1b8dd41d6e21ea692020ee0d958781ea15f052e806f189a8970e		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15901 bytes

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