> If I simply process the root site, I get "forbidden"
> You log on at <https://sitea.customerhub.net>
HTTrack can NOT log in to https sites

> The pdfs are from
> <https://s3.amazonaws.com/sitearesources/63/wcsneray>.
> pdf
can you see a directory listing in the browser
<https://s3.amazonaws.com/sitearesources/63>
No - can't be done.
Yes - firefox with download them all.