Anti-malware don't like that IP. There is probably something more going on than just posing as github. VirusTotal [1] also has a couple findings. You could try calling their ISP's customer service in the off chance they
may do something with it. That network also shows up in the firehol [2] blocklists so they
may cycle their IP within that network to evade some anti-malware. I would wager they have many domains and IP addresses to choose from.
grep -c "^115.111.91" 2>/dev/null *set | grep -E -v ":0$"
cruzit_web_attacks.ipset:1
firehol_level4.netset:1
iblocklist_cruzit_web_attacks.netset:1
nullsecure.ipset:1
whois:
organisation: ORG-TCL6-AP
org-name: Tata Communications Limited
country: IN
address: Customer Service & Operations
address: Plot Nos. C-21 & C-36
address: 'G' Block, Bandra Kurla Complex,
phone: +91-22-66502826
fax-no: +91-22-66502039
e-mail: ip-addr@tatacommunications.com
mnt-ref: APNIC-HM
last-modified: 2017-08-14T01:05:24Z
source: APNIC
[1] -
https://www.virustotal.com/gui/url/bba0280c47f58e96f1ff15af7...[2] - https://github.com/firehol/blocklist-ipsets.git