importing database backup to phpmyadmin return #1064
Most likely your backup file is a zip file (judging by magic bytes PK at the beginning) that contains a binary backup of MyISAM tables (a set of files):


f2blog_attachments.frm
f2blog_attachments.MYD
f2blog_attachments.MYI
etc...


What you need to do to restore your backup  


Unzip the archive file
Stop MySQL  
Copy unpacked table files to a DB directory (or create a DB first) in the MySQL data directory  
Start MySQL