@Sulakkya This is not something the connector supports really. If your data is in form fields, then you can write back to it, but if it is a standard PDF, then you cannot. If this were a use case I had to do, I would first create a new PDF file with form fields where the data from the original (and virtually identical) PDF would be copied to. I would then create a connector for both PDFs and copy the data between them. As you move the data, you can examine each field for whatever pattern you are looking at and redact it. This would leave you with a new PDF file divorced from the original without any of the data you need to redact.

https://docs.pega.com/bundle/robotic-automation-221/page/robotic-automation/pdf-connector/include-in-automations.html