Is it possible to use wget or curl to download documents from the FCC ECFS site?

I'm trying to use the FCC's Electronic Comment Filing System (ECFS) to bulk download filings in individual proceedings. They have an API that will return every filing in a proceeding. It returns a URL for individual documents in the format: https://www.fcc.gov/ecfs/document/10809709027819/1 However, while this works in the browser, it only downloads a placeholder HTML file saying JavaScript it required when I use wget or curl. I tried examining the page in my browser but couldn't find anything like a source URL for the actual PDF. Is there a way to use wget or curl to get at the actual PDF?