Malicious PDF — malware analysis report

Static analysis result for SHA-256 c286d2057addd132…

MALICIOUS

PDF

12.7 KB
MD5: 674fa246471414cad0966f9971d65d20 SHA-1: eb2915283c3f4b6f5653fbd2b49a0b4e8a73f2d5 SHA-256: c286d2057addd132222773a0cfb6851c8a6573cacac913962149f4c1028ea592
188 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that exploits CVE-2010-0188 via XFA forms, as indicated by multiple heuristic firings. The embedded script payload, totaling 12276 bytes, is likely responsible for downloading and executing a secondary stage. The presence of an embedded URL further supports this delivery mechanism. The ClamAV detection name 'Pdf.Exploit.Agent-6136306-0' also points to a known exploit.

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
3ce1fd4ed3d15e6f5875cc8ddbf4c9d561590347fbd9a3786c3f6a0d861fab50		 pdf-embedded-script PDF raw stream script payload at offset 0x384 12276 bytes

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