17 CFR § 232.106 - Prohibition against electronic submissions containing executable code.
(a) Electronic submissions must not contain executable code. Attempted submissions identified as containing executable code will be suspended, unless the executable code is contained only in one or more PDF documents, in which case the submission will be accepted but the PDF document(s) containing executable code will be deleted and not disseminated.
(b) If an electronic submission has been accepted, and the Commission staff later determines that the accepted submission contains executable code, the staff may delete from the EDGAR system the entire accepted electronic submission or any document contained in the accepted electronic submission. The Commission staff may direct the electronic filer to resubmit electronically replacement document(s) or a replacement submission in its entirety, in compliance with this provision and the EDGAR Filer Manual.