How to open PDF and assertion field in PDF using Soap UI. Please can you send me the code.

You can read this article on reading PDF with java code - https://mkyong.com/java/pdfbox-how-to-read-pdf-file-in-java/

You will have to make a java utility for that.

Write java code which can read pdf and then convert to jar and add jar in soapui. This will be same way like I added xls reading utility.

thank you!