http://www.video-converters.org/pdf-epub-converter.php If you want to read pdf file on Sony reader then you need to convert it to epub format.

2.  Sony Reader is able to display PDF content but not in
formatted way it display font very small. When user zoom
in the PDF file to see content clearly ,user have to back and
forth to read the content of the PDF file.
 The ePub User don’t have to do Zooming in and out to
see the content clearly. This software is very light it take
only 400 kb in the phone so it can acquire
less space comparing other software.

3. ePub Reader
ePub Reader is the very popular Reader. It display the text after the optimization
of the particular display device. It formats the content of the text on the basis of
text font and display size. So by this feature it display content very easily user
have to do is only slide the pages.

4.  To the better reading experience with Sony reader user should convert the
PDF file to EPUB format . PDF is very popular e-book format. But always
user encounter a problem user need to move scroll bar right or left for
seeing all the content present in the PDF file when the screen is to small.
But in EPUB there is no such kinds of problems. To avoid this type of
problem user have to convert PDF to EPUB . EPUB is very popular and
supported by all of the reader like Sony reader, pad etc. The most
important feature is it can adjust automatically according to the size of the
screen.

5. User Guide

6. Step 1:download software and install it.

8.  For more information ---
 http://www.video-converters.org