Malicious PDF — malware analysis report

Static analysis result for SHA-256 c91499b7892cfe64…

MALICIOUS

PDF

16.3 KB
MD5: 6b0d4013431d6c88bd1bf150a8f7869f SHA-1: f3b5acdeec35c95093791d931fb01b428ae8578c SHA-256: c91499b7892cfe64b7186b8e98e84b63fcc41736941455539d913ead0ba7de2f
188 Risk Score

Malware Insights

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

The PDF file contains an embedded XFA form which is exploited via CVE-2010-0188 in Adobe Reader. This exploit allows for arbitrary code execution. The embedded script payload, although not fully detailed, is indicative of a malicious dropper or exploit. The ClamAV detection further confirms the malicious nature of the file.

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
cc5a0eaf77753531f60e5be3832dc53682382f6da6ca8027f52f2b70b779771e		 pdf-embedded-script PDF raw stream script payload at offset 0x359 15912 bytes

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