If they did - it would not be in the archives of the national party, so I'm not sure how you expect the journalist to answer this question from that source.
But either way we know the answer already: no. The communist party was banned, they could not open a legal bank account let alone donate money to anybody. Their activities had to happen in secret, they were COLLECTING donations - not making them.

If you mean communists countries, that's another story. It's known that there was funding and training for the ANC at least from some of them (notably Russia) but nobody knows the extent of it and sure won't find any of that in any archive in this country as it all happened in other countries. The only single place where any surviving records of that may exist is Moscow and that's unlikely as the USSR were very good at wiping the records before the collapse. 
I wouldn't advise trying though. Putin is ex-KGB, he would NOT want you snooping less you find something on him.