Need to differentiate between discordbot crawler and malicious bots (and parser vulnerabilities)

DiscordBot is making requests with a crawler pattern that looks for vulnerabilities with "'" (quotes) at the end of the URL, not HTTPS.
I've tested various URLs in Discord chat and none of them have quotes.
I thought it was a fake crawler, but then I checked discord.com in reverse dns.
I also checked for security holes in the discord parser, since chatting "https://domain.com/adsf/zxcv/'" would normally only link to "https://domain.com/adsf/zxcv/".

1. Check the security hole in the discord parser
2. how to tell if a discord server is real or fake - reverse dns or check api
3. explain the purpose of the crawler and how to distinguish it to https://discordapp.com in the agent.

thank you.

[
    {
        "ip": "35.227.62.178/32",
        "protocol": "http",
        "host": "*****",
        "path": "/mall/view/goodsNo/133772'",
        "agent": "Mozilla/5.0 (compatible; Discordbot/2.0; +https://discordapp.com)",
        "revdns": "178.62.227.35.bc.googleusercontent.com",
        "logstamp": 1703427878
    },
    {
        "ip": "35.196.132.85/32",
        "protocol": "http",
        "host": "*****",
        "path": "/mall/view/goodsNo/2677981/categoryNo/4957'",
        "agent": "Mozilla/5.0 (compatible; Discordbot/2.0; +https://discordapp.com)",
        "revdns": "crawl-35-196-132-85.ptr.discord.com",
        "logstamp": 1661437586
    },
    {
        "ip": "35.237.4.214/32",
        "protocol": "http",
        "host": "*****",
        "path": "/mall/view/goodsNo/2677981/categoryNo/4957'",
        "agent": "Mozilla/5.0 (compatible; Discordbot/2.0; +https://discordapp.com)",
        "revdns": "214.4.237.35.bc.googleusercontent.com",
        "logstamp": 1661437492
    },
]