Researchers have discovered a new variant of Shlayer Mac malware that  bypasses Apple’s built-in security protections and is being spread via malicious results from Google web searches.

Shlayer is used generally to distributed bundled adware or unwanted programs. According to a company blog post from Intego, the new version of this malware was observed being delivered via a weaponized Apple Disk Image (.dmg) file, disguised as an installer for Adobe Flash Player.

macOS device owners searching via Google for certain YouTube video titles could fall victim to this scheme, as malicious actors have used search poisoning techniques to develop malicious results for these inquiries. Users who click on these results will be taken to various redirection sites until they land on a page that falsely claims their Flash Player is outdated and encourage them to download and install an update. This so-called update, however, is the aforementioned trojanized .dmg file.

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