Scanned the "suspicious" files with VirusTotal, nothing to be concerned about - only false positives in the case of ClamAV. https://www.virustotal.com/de/file/291c5cbd0b5d1742ac5637a53fa3be8fb63a6dcbb12423e160bc2724b645636a/analysis/1525855861/ https://www.virustotal.com/de/file/f08093f88f00a12c6f1ef7946cbed106564b0b177c223cdd4d043029ec13a68c/analysis/1525855962/ https://www.virustotal.com/de/file/ad48d2de9d1f4172aca475d9220bbd152b7280f98642db561ee6688faf50cd1e/analysis/1525856012/ https://www.virustotal.com/de/file/ee0aa60de440fdcf8587ddebf1f691bc777a32d8d4f119beed63f405dc56176d/analysis/1525856070/ https://www.virustotal.com/de/file/b7c1c9e67975ca219089a3a6a9c77c2d102cead2dc38264f2524aa3326da376a/analysis/1525856091/ https://www.virustotal.com/de/file/0e2a3edbd72e56074c07455f20db4dd981c915c46932efa7902e2d4cbff072c9/analysis/1525856118/ Therefore ticking off (once again): [x] clamav scan of sources