WA redirecting to pv_obj_cache

I am new to WA.

 

 

we have a URL mormaliZation configured for Groups "Documents".

 

 

When we are requesting for a PDF document which contains image embedded into that, I am not getting the response. And it is getting redirected to /pv_obj_cache/pv_obj_id_FA0D6A511860634E22B5CF5F40B0D548C5DC0000./eXperts/Reports.do and i am not getting any PDF back.

 

 

I might sound confused.Please bare with me.