Every person who corruptly attempts to influence a juror, or any person summoned or drawn as a juror, or chosen as an arbitrator or umpire, or appointed a referee, in respect to his verdict in, or decision of, any cause pending, or about to be brought before him, either:
(1) By means of any communication, oral or written, had with him, except in the regular course or proceedings;
(2) By means of any book, paper or instrument exhibited, otherwise than in the regular course of proceedings;
(3) By means of any threat, intimidation, persuasion or entreaty; or,
(4) By means of any promise or assurance of any pecuniary or other advantage; is guilty of a felony.