PowerShell

Unobfuscate a Spammy Email

Demonstrates the Chilkat Email.UnSpamify method, which unobfuscates an email by undoing common spammer tricks — it removes comments from HTML bodies and unobfuscates hyperlinked URLs. This example cleans an HTML body whose link was broken up by an inserted comment.

Background: Spammers deliberately scramble HTML to slip past filters — inserting empty comments in the middle of words or URLs (example.com), or otherwise obfuscating links — so the message renders normally to a human but confuses naive keyword matching. UnSpamify reverses those tricks, producing a normalized body that is easier to analyze, classify, or scan for the real destination of its links.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

#  Demonstrates the UnSpamify method, which unobfuscates an email by undoing common spammer
#  tricks: it removes comments from HTML bodies and unobfuscates hyperlinked URLs.

$email = New-Object Chilkat.Email
$email.Subject = "UnSpamify example"

#  An HTML body with an obfuscating comment inserted into a hyperlink.
$email.SetHtmlBody("<html><body>Visit <a href=`"http://exa<!--x-->mple.com`">our site</a>.</body></html>")

#  Undo the obfuscation.
$email.UnSpamify()

$cleaned = $email.GetHtmlBody()
$($cleaned)