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A fake job offer took down Axie Infinity

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Re: A fake job offer took down Axie Infinity

#11

They say that a worker downloading (and presumably viewing) a PDF (fake job offer) allowed spyware in. Which PDF viewer was exploited?

You can easily embed arbitrary javascript into any PDF, and you can obfuscate it pretty well enough to get past most endpoint security tools on the market.

Re: A fake job offer took down Axie Infinity

#13

They say that a worker downloading (and presumably viewing) a PDF (fake job offer) allowed spyware in. Which PDF viewer was exploited?

I'm not sure it was even an exploit. It could very well be an intentionally-malformed PDF that pretends it has to be opened in a special "viewer" software, maybe even Adobe- or DocuSign-branded.

Re: A fake job offer took down Axie Infinity

#14

They say that a worker downloading (and presumably viewing) a PDF (fake job offer) allowed spyware in. Which PDF viewer was exploited?

You can easily embed arbitrary javascript into any PDF, and you can obfuscate it pretty well enough to get past most endpoint security tools on the market.

That JS would be sandboxed similar to in browsers, so you'd still need an exploit to break out of that.

Re: A fake job offer took down Axie Infinity

#15

Curious if anyone has been able to find technical details of how this attack works/worked. I'm under the impression most PDF viewers would prevent this sort of attack (e.g. opening a PDF in your browser should sandbox it to the browsing context), but really keen to know what PDF viewer / OS was used by the dev.

Probably Acrobat.

Re: A fake job offer took down Axie Infinity

#16

They say that a worker downloading (and presumably viewing) a PDF (fake job offer) allowed spyware in. Which PDF viewer was exploited?

im guessing it was the ol' ".pdf.exe" trick.

You're downvoted, but I'm certain this is exactly what it is.

Re: A fake job offer took down Axie Infinity

#18

Two points to highlight from this article: 1. LinkedIn is an absolute godsend for bad guys, allowing easy targeting of everyone in the company with spear phishing emails and texts. I know many security professionals no longer use their real name, and don't list the real name of their company, because they know it's such a great hacking vector. Not sure what/whether LinkedIn can do anything about this. 2. I wish there…

How usable is LinkedIn with a pseudonym? Is that a security industry only practice or could a regular dev get away with that too? I've always been shy about having a profile with my actual name but id consider one with a thin veil of anonymity.

Re: A fake job offer took down Axie Infinity

#19
The other major cause of the failure was that one dev had access to 5 signing keys. That shouldn't have happened, because than that one dev could have run off with $540 Million...

And remember, it wasn't just that one dev - it was everything running on his computer - think of the probably tens of thousands of developers who wrote the code that runs as root on his PC, much of it unreviewed.

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