This document appears to be a technical file related to printing processes as it references CMYK color modes and does not contain any clear text. The file name and date indicate it is an Aviso 2.pdf from December 15, 2012 but no other contextual information can be gleaned from the provided information.

1. Aviso 2.pdf 1 15/12/2012 13:04:28
C
M
Y
CM
MY
CY
CMY
K