Embed Pdf cut if horizontal

Hello all

I want to embed a pdf that has an horizontal format but when using the DirtySuds – Embed PDF plug in with the code [embed]http://example.com/file.pdf[/embed] the displayed pdf appears as cut.
If it can help:
http://www.uelarchitecture.org/tryembedded-pdf/

– I tried to change the width in the code like this
[embed width= "900"]http://example.com/file.pdf[/embed]
– I tried to change settings in Settings>>Media>>Embed

but nothing works. I want to scroll it vertically, it’s just an horizontal pdf (2 vertical pages printed together in a single one).
How can i do?
thank you very much!
m.