Google Chrome is marking Qt downloads as "Malicious"

Downloading Qt from the Qt website, http://download.qt-project.org/official_releases/qt/5.3/5.3.0/ , the downloads are reported as malicious by google chrome and "blocked" (named "unconfirmed" and need to be renamed to be used).

MD5 checksum of downloaded file matches the md5 listed on that page, and virus scan comes up negative, so likely a false positive from google or malicious users flagging it.

Relevant google support page: https://support.google.com/chrome/answer/4412392?p=ib_download_blocked&rd=1