change pdf box

pdfinfo -box 5.pdf
CreationDate:   Sun Feb 10 08:05:43 2013
ModDate:        Sun Feb 10 08:05:43 2013
Tagged:         no
Form:           none
Pages:          1
Encrypted:      no
Page    1 size: 612 x 781.2 pts
Page    1 rot:  0
Page    1 MediaBox:    36.00    36.00   648.00   817.20
Page    1 CropBox:     36.00    36.00   648.00   817.20
Page    1 BleedBox:    36.00    36.00   648.00   817.20
Page    1 TrimBox:     36.00    36.00   648.00   817.20
Page    1 ArtBox:      36.00    36.00   648.00   817.20
File size:      70611 bytes
Optimized:      no
PDF version:    1.6

# intended box
Page    1 MediaBox:    0.00    36.00   648.00   817.20
Page    1 CropBox:     0.00    36.00   648.00   817.20
Page    1 BleedBox:    0.00    36.00   648.00   817.20
Page    1 TrimBox:     0.00    36.00   648.00   817.20
Page    1 ArtBox:      0.00    36.00   648.00   817.20

gs -sDEVICE=pdfwrite -c "[/CropBox [0 36 648 817.2] /PAGES pdfmark" -o out.pdf -f 5.pdf
GPL Ghostscript 9.06 (2012-08-08)
Copyright (C) 2012 Artifex Software, Inc.  All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
**** Unable to open the initial device, quitting.