Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca63acdd853990c3…

MALICIOUS

PDF

12.8 KB
MD5: 6c39eebdf3fa8e5dff48a1fd77b34b29 SHA-1: 7da1e6d4e73b27da4d4384b84a1608509ad67220 SHA-256: ca63acdd853990c3d99f978bcaa9dfdddc15b5be8b0e1a1a3296bc76222f0bb5
188 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ClamAV and exhibits characteristics of an exploit. Specifically, it leverages the CVE-2010-0188 vulnerability related to XFA forms in Adobe Reader. The embedded script payload, although not fully detailed, is indicative of an attempt to download and execute a secondary stage. The presence of an embedded URL further supports this conclusion.

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
210e432d084a184a309ea7916309b8d70bc1284ee4c6d96b2c18139cb61b1e4c		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12324 bytes

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