Hello!! 

For the static GK Lucent’s book and Arihant are nice but as you do not have much time left so I would suggest you to go for pdfs! 

What you can do is just type on google affairs cloud history pdf or affairs cloud economics pdf so you will get enough material there! Affairs cloud is just one of the sites to refer if you will type on google just that history pdf for SSC there will be a lot of material available. I know you are not preparing for SSC but the syllabus of static is same!!

I hope it helps 

Feel free to ask if you have any doubts.