Malware Detected on my own website?

I recently upload a file on my website https://birthdaywisheszone.com/ and this file detect a malware on browser.this file does not have any interrupted code.kindly advise me how to resolve this problem.and where i can upload this file .

What does The message from avast say? … a screenshot would help

Suspicious script and browser difference :
https://www.websicherheit.at/website-malware-viren-scanner/?url=birthdaywisheszone.com

6 months ago only on 1 blacklist, now on 3 :
http://www.urlvoid.com/scan/birthdaywisheszone.com/

Bad IP history :
https://www.virustotal.com/en/ip-address/104.27.189.77/information/

Blacklistings on that ASN :
http://urlquery.net/report.php?id=1481104075347

Suspicious :
https://quttera.com/detailed_report/birthdaywisheszone.com

Invalid SSL response :
http://zulu.zscaler.com/submission/show/c069e0e1696a53a7d67ac2737990c3f4-1481104058

Vulnerable library used :
http://retire.insecurity.today/#!/scan/9952d3206b8ec83b847cd357713291cee78cefb4e1b9ebb7d837c363cb19082c

Plugin problem :
jetpack 4.3.2 latest release (4.4.2) Update required

Wordpress problem :
Warning Directory Indexing Enabled