Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6d055060835239…

MALICIOUS

PDF

73.4 KB
MD5: 5a35ab44efd541ba180d90b62f0efdbe SHA-1: d758f62d28840611c3905b9a3ebee9de0659d412 SHA-256: 1b6d055060835239f19aa01cee25e99c49c3230bcce471c215b0282040555a47
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 by CVE-2010-0188, a known vulnerability in Adobe Reader. This exploit allows for arbitrary code execution. The embedded script payload, likely responsible for the exploit's execution, is present but too obfuscated to determine its exact function. 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_0000034e.bin
bdbe739c6a1014aeca1546af72daeab50f63e3f8130c5682481899c72a4f608c		 pdf-embedded-script PDF raw stream script payload at offset 0x34E 74422 bytes

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