Malicious PDF — malware analysis report

Static analysis result for SHA-256 9988bea8d89017ea…

MALICIOUS

PDF

12.8 KB
MD5: 3c77bfb4be4903cab21bf57eef88a2dc SHA-1: 14ce6f40f02638cfc403a637ac8f6c9e93198c00 SHA-256: 9988bea8d89017ea9231d4e24ee26d9496315b03d262eb257ac0c63c98531919
188 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2010-0188 indicates the PDF exploits a known vulnerability in Adobe Reader. The presence of XFA forms and embedded scripts further supports this, suggesting the script within the XFA form is responsible for executing the exploit. The embedded script likely downloads and executes a second-stage payload, although its exact functionality is obscured. The ClamAV detection name 'Pdf.Exploit.Agent-6136306-0' also points to an exploit.

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_00000384.bin
3a01483488f8449b75b95187913e5eee8655879c32c309f33c595fc56670168a		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12288 bytes

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