Send form submit ion data with webhook from velo?

I have a form on a wix and one of the fields is a file upload. I have an automation set up on wix that should send the form data(including the PDF file) to a webhook which send it to my CRM. The issue is the files format is lost somewhere. Wix stores in pdf but it is not being sent in pdf. I did a bit of digging adn it seems that wix uses JSON payload while for the document to be transferred i need multidata(appereantly cannot change the payload on wix).

But I think sending data to a webhook using a code instead of wix native automation should fix the problem. I want to know your thoughts, if it would work what would be the best way to approach it. if it would not what other solutions could there be?