Merge PDF is Corrupting the File

I will outline the problem I am having in detail.

So I am merging PDF files in a loop, this step works fine. If I save these files to a sharepoint locationusing the file content output from the Merge PDF function it works fine and renders correctly. However this is where it gets weird. If I add these filles to an array (in order to send in an email) like below...

...the file says its corrputed. You will notice I am wrapping the file content in a string function, this is because if i dont then the string loses the JVB format and becomes %PDF and then a lot of weird charecters. The last thing I will add is that because the files I save to sharepoint are fine, I can redownload them into power automate, add them to the array and send them in an email fine, it is just when I try to get the file content directly from the adobe function, it breaks.

Any thoughts?