scanner driver Samsung Xpress M267X/287X
You should be able to download this from Samsung's support center. There were new scan drivers released 9th of April this year and they can be found here:
http://www.samsung.com/us/support/owners/product/SL-M2875FD/XAA

Remember to follow the instructions supported by Samsung:


  
    Security setting should be changed in order to install drivers in Mac OS X 10.8:
    
    Run [System Preferences] under [Application] folder
    
    Select [Security &amp; Privacy]
    
    Select [Anywhere] under [Allow applications downloaded from]