how to read this pgm file (p5..255..255..255..€€€€€€€€€€€€€€

[layachi_med@hotmail.com]

Hi,,
i would like to read such pgm file :it looks like raw pgm file..

P5
255 255
255
€€€€€€€€€€€€€€€€$$%%&('(&&*''*-,,)()*.-+*00-,231.,.,.--)-0-........data...

i know how to read other pgm files but for that one i'am little bit
lost how can i read such characters in 8bits..and what the
corresponding format for them ..
are they ascii ....Any help will be appreciated

thnk you..