I have a few pdf files. There are vector graphics in the maps. How can I use them to be visible and editable in ArcGIS? I want to see the attribute tables content, etc.
It is not possible as of 10.3 to directly import shape/geometry information into ArcGIS from a pdf, regardless of whether it is geospatial or just a plain pdf. You must either use a third party extension per the comments/linked question, or:
A) If you want to be able to use the attribute table data in Arc you could transfer the pdf to a spreadsheet (ie. Excel) or database (ie. Access) format then bring it into Arc as CSV file. This is of course if the PDF contains structured, tabular data. Now you mention that it is maps in the pdf, simply converting into a usable format will not supply any attribute data so I don't know what you are really looking for.
B) Convert the PDF to raster and georeference it, then build the vector data and populate the attributes if needed.