Você pode usar o gsview
Install GSview to the computer.
Convert file1.pdf and file2.pdf into
PostScript (.ps) format. In Adobe
Acrobat Reader this can be done with
File -> Open.. file1.pdf, File ->
Print... -> Select some PostScript
printer -> mark Print to file -> OK.
Write file1.ps to File name: -> OK.
Repeat these steps to convert
file2.pdf into file2.ps. In this
example it is assumed that the files
are saved into c:\tilap\ directory.
It's not necessary to have a
PostScript printer. A driver for it
can be installed even if there is
already some other printer attached to
the computer.
Open Notepad (or some other text
editor), copy and paste the following
PostScript code snippet into an
editor. Edit the code to correspond
the directory where file1.ps and
file2.ps were saved. Remember to to
use \ instead of \ in path names.
Save the results to some directory as
file12.ps.
%!PS
% Written by Helge Blischke, see
% http://groups.google.com/groups?ic=1&selm=3964A684.49D%40srz-berlin.de
%
% The following 2 procs encapsulate the jobs to be processed
% much as is done with EPS images:
/_begin_job_
{
/tweak_save save def
/tweak_dc countdictstack def
/tweak_oc count 1 sub def
userdict begin
}bind def
/_end_job_
{
count tweak_oc sub{pop}repeat
countdictstack tweak_dc sub{end}repeat
tweak_save restore
}bind def
% Now, add your jobs like this:
_begin_job_
(c:\tilap\file1.ps)run
_end_job_
_begin_job_
(c:\tilap\file2.ps)run
_end_job_
% and so on.
Start GSview to view merged PostScript files. File -> Open... -> file12.ps.
...and convert it back to PDF: File -> Convert... -> Device: pdfwrite -> OK -> file12.pdf
Outras alternativas incluem CutePDF Writer & PDF Toolkit