Error using Postman and the files api to save a pdf

I’m testing adding a file using Postman and I’m getting the error:

{

    "message": "The request is invalid.",

    "modelState": {

        "": [

            "Unable to translate bytes [E2] at index 10 from specified code page to Unicode."

        ]

    }

}

Here are the headers:

In the body I’ve tried several different pdf files but I still get the same result.  I’m not sure what I need to change to get this to work.