First pdf file will be big (60MB)

http://modular.math.washington.edu/sga/sga5/SGA5.pdf
Second is just one megabyte.

http://math.berkeley.edu/~ribet/Articles/invent_71.pdf
Last pdf is not scanned version, but it contain bookmarks and link.

http://tobi.oetiker.ch/lshort/lshort.pdf
could you check whether bookmarks and link works?

Could you search some word like 'latex' in the third pdf.

Thank you very much.