You can deeplink into PDFs by the way: at least Firefox's integrated PDF viewer jumps directly to the page when you append #page=37 and I assume that Chrom(ium) will do the same. There are other parameters. e.g. for highlighting or searching words. You can use several parameters at once by appending the following ones similiar to parameters in an URL with &<parameter>=<value> (obviously replace <parameter> and <value> with what you want).

https://www.spacex.com/media/making_life_multiplanetary_2016...