You don't. It's a built-in font that Acrobat uses as a temporary substitute in case the font used in the file can't be embedded or when the user doesn't have access to the original font.
More specifically, why do you think you need that font and for what purpose?
I need it to edit a document. The font does not match and i need that specific font. I have the subscription to Adobe Acrobat Pro that i pay for, but that font does not show up.
On behalf of Adobe, let me summarize this situation.
Although you didn't explicitly state this, we are assuming you are trying to edit an existing PDF file as opposed to a source document.
Adobe Sans MM (and the accompanying Adobe Serif MM) are internal substitution fonts used by Acrobat and Reader to display text for fonts that were not embedded within a PDF file (not embedding fonts is a strongly non-recommended practice). The fonts do not show up on any font lists on your system since they are not actually installed on your system and are not supported for use in creating either source documents (Word, Excel, PowerPoint, InDesign, Illustrator, Photoshop, etc.) or as an editing font within Acrobat.
If in fact you have a PDF file that actually has either of these fonts referenced, it is probably due to someone's misuse of the product (possibly “refrying” a PDF file - distilling PostScript output from Acrobat from a PDF file that did not have embedded fonts).
That having been said, the closest Adobe font to Adobe Sans MM would be Myriad Pro, a font that is available through the Adobe Fonts service (formerly Typekit). (For Adobe Serif MM, the closest Adobe font would be Minion Pro.)
I've got simillar problem as previous user but bit more clarity on what Adobe Sans MM is. Saying that - I'm still looking for something similar to Adobe Sans MM. Funnily enough - my client received the PDF document from me without embeded fonts (my bad), and liked Sans MM more than what I proposed. I spent quite a few hours looking in my font libraries and online and couldn't finds what I was looking for. Mainly, because both the font I used and Adobe Sans MM have same spacing and Myriad Pro doesn't. I'm struggling to find font that will meet all the specs I need (both aesthetically and composition wise). Is there anything closer to Sans MM than Myriad Pro? How can I look for better options?
When Adobe Sans MM is used as a substitute, the job of Acrobat it to make it fit the original spacing. It may also distort the letter forms. (MM means multiple master, an obsolete technology, used only by Acrobat, allowing careful distortion of fonts to make new fonts - including stretching, changing boldness etc). I think Adobe Sans MM was based on Myriad, so they as close as you can get; however you can't distort Myriad in the same way,
As I previously discussed in this thread, in fact, Adobe Sans MM was directly derived from Myriad (i.e. same glyph design and basic glyph and font metrics), but with additional internal parameters that allowed it to be used as a substitution font for any Western Latin set of glyphs by dynamically modifying the advance width and some horizontal scaling. (Note that what is now Myriad Pro actually started off over 25 years ago as a Type 1 font family, Myriad Multiple Master!)
As such, the closest font to Adobe Sans MM is in fact Myriad Pro. (And the closest font to Adobe Serif MM is in fact Minion Pro.)
Thank you both, @Dov Isaacs and @Testscreenname
I did some close comparison and managed to find something (Laguna Vintage Condesed Regular) closer to what appeared in the PDF than the Myriad Pro. The algorythm (?) must have modified the original font I proposed ( HouseGothic Black) quite a lot, because the reslut was significantly off the Myriad territory. Thanks once again - good and interesting lesson on typography 🙂
have a good one,