Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a195c2dba273941…

MALICIOUS

PDF

12.7 KB
MD5: 3087c392eecad691036bfa3fb5f68444 SHA-1: cd30c631bf3045345cced6a8ba05ee547f9c4694 SHA-256: 3a195c2dba27394154597f0661d8e96a2cf021c1e96dd0f27f427d0def415cf7
190 Risk Score

Malware Insights

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

The PDF file contains an XFA form that exploits CVE-2010-0188, a known vulnerability in Adobe Reader. The embedded script payload within the XFA form is indicative of a downloader or exploit delivery mechanism. The presence of an embedded URL, though not directly malicious in reputation, is often used in conjunction with such exploits to fetch further stages of the attack.

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
84ee5360ebea925eb7f90483ba2f9851b9202da1be0d36c4129dfcf5abc6b314		 pdf-embedded-script PDF raw stream script payload at offset 0x359 12295 bytes

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