It will cost a lot of time if you'd create those nodes one by one in ABAQUS GUI using geometry tool.
Generally, There are two ways you can do:
1) Using the ABAQUS Python Macro script in the command line.
In this way, you need to find the corresponding python function to call. When you create a random node, you should find a change in the log(.py, .pyr, .log) file. Abaqus automatically output the macro in one of those files. Then you have to follow the same Macro pattern code, to write a simple loop to read your geometry file values and import them one by one.
2) Using the INP file.
Similar to above, in this way you need to find a template file with a successful mode. Then, to modify the nodes value in the .inp file. Then, import this inp file in the ABAQUS CAE.