There is a predefined http-profile for web-filtering EWF settings called "junos-wf-enhanced-default".
This article contains its configuration
You can check what is contained in the default configuration by executing the command - "show configuration groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default | display set".
Here is the output:
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Adult_Material action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Gambling action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Games action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Illegal_or_Questionable action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Tasteless action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Violence action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Weapons action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Militancy_and_Extremist action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Racism_and_Hate action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Advertisements action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Nudity action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Adult_Content action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Sex action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Hacking action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Personals_and_Dating action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Alcohol_and_Tobacco action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Abused_Drugs action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Marijuana action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Malicious_Web_Sites action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Spyware action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Phishing_and_Other_Frauds action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Keyloggers action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Emerging_Exploits action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Potentially_Damaging_Content action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Malicious_Embedded_Link action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Malicious_Embedded_iFrame action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Suspicious_Embedded_Link action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Potentially_Unwanted_Software action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Potentially_Exploited_Documents action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Mobile_Malware action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Unauthorized_Mobile_Marketplaces action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Custom_Encrypted_Payloads action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Files_Containing_Passwords action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Advanced_Malware_Command_and_Control action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default category Enhanced_Advanced_Malware_Payloads action block
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default default log-and-permit
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default custom-block-message "Juniper Web Filtering has been set to block this site."
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default fallback-settings default log-and-permit
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default fallback-settings server-connectivity log-and-permit
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default fallback-settings timeout log-and-permit
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default fallback-settings too-many-requests log-and-permit
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default timeout 3
set groups junos-defaults security utm feature-profile web-filtering juniper-enhanced profile junos-wf-enhanced-default retry 1