Malicious PDF — malware analysis report

Static analysis result for SHA-256 c79c69ec69959b12…

MALICIOUS

PDF

12.6 KB
MD5: 7b5497d037607e7668938aed1822b8f2 SHA-1: 948c5605528652acc2dca43bb745e3b744eb5584 SHA-256: c79c69ec69959b128ac1b382b1f032b0dfbc72a12cf350e4a23b37aff15a1215
188 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV (Pdf.Exploit.Agent-6136306-0) and exhibits critical heuristic firings for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. The presence of an embedded script payload within an XFA form further indicates malicious intent. The script is likely designed to download and execute a second-stage payload from the embedded URL, although the script content itself is not directly provided for detailed analysis. The embedded URL is likely part of the exploit chain.

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
5372146cda4fd7ab36035275adde6ac505ed0bfc3a03216d550e6afb79866aea		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12209 bytes

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