I actually thought of another potential solution (I am bored, can you tell lol). I THINK I recall reading something (forum or some other place) that its possible to get a file via a REST API call that Aware converts into a file (via BASE64?). If that's possible, it is probably also possible to find some online API that downloads a file from a URL and turns it into a BASE64 string and then sends it to another REST API (i.e an Aware one and Aware receives it and then converts it into a file). Shouldn´t this be possible?
I found this as the first result when I googled it and could work (and if not, I am sure there are others): https://www.api2convert.com/