Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20aeaf2b63e0ced…

MALICIOUS

PDF

16.1 KB
MD5: e418ef756a67f570619c604c8eb176ab SHA-1: 6df4db2de0981bbc751360213e5bdad7bc83b33d SHA-256: b20aeaf2b63e0cedf5193d4063136651e0cd341672e66e2131ddccf770e0cee1
190 Risk Score

Malware Insights

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

The sample is a PDF file that leverages an XFA form to trigger the CVE-2010-0188 exploit in Adobe Reader. The embedded script payload, detected by heuristics, is likely responsible for executing the malicious action. The presence of the XFA exploit and embedded script strongly indicates a malicious intent to compromise the user's system.

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
ff726aad309f0fa7e1a5e83e64bbf06d72281e99bafd4c255a4b288e2956afd3		 pdf-embedded-script PDF raw stream script payload at offset 0x34E 15763 bytes

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