Actually I've mae a mistake in my previous post
[all-something, like a list] should just be a directory that's not changing
(renamed it to f).
Please refer to my previous post for the full reply.

For reference here is the files I am trying to get and the only way to access
them through several links

prefix.asite.com.au/a/b/c/f
prefix.asite.com.au/a/b/c/[a number]
asite.com.au/d/b/c/e/[name.pdf]    - These PDFs are what I want

[   ] indicates a directory that changes depending on which PDF I want to
access