Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe40830985eb68d3…

MALICIOUS

PDF

102.1 KB
MD5: 3dbfdf5bfa7c518550fdd88a812cf5d5 SHA-1: fbcaee6c1402af734796deb45d1998001345230e SHA-256: fe40830985eb68d3aa90aefd67a55eeefa9363d468f24abd366426e1a9c2025f
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF document that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA form processing. The heuristic firings indicate the presence of an embedded script payload within an XFA form, which is characteristic of exploit delivery. The ClamAV detection further confirms its malicious nature. The embedded URL is likely part of the exploit chain or a secondary payload delivery mechanism.

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_00000346.bin
64ebfe828ee53ccc018685d15fc0e0c3328ac4c5f6feffc595af9354045a486a		 pdf-embedded-script PDF raw stream script payload at offset 0x346 103854 bytes

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