PDF malware analysis — malicious · 1cf6df5b5b5b419d

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 07:33:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 23b5272942d30d2ec5ac64e118fd1d75 SHA-1: 69ce23c895774ccb30ceb2ad13facf46f7fdc1b9 SHA-256: 1cf6df5b5b5b419da032725cee7364d78eadb2db9a4d6aefd3897d48583a64bd

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links to external websites, many of which are structured as SEO link farms. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-without-verify-game-hack, suggests a lure for users seeking game hacks. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link farm.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
External URI info PDF_URI

PDF contains an external URL action
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://netcdn.tw/app/406889139/coin-master-hack-without-verify-game-hack
- https://miraller.com/upload/files/how-to-get-free-robux-on-ipad_GM431946152.pdf
- https://miraller.com/upload/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
- https://miraller.com/upload/files/how-do-you-send-a-roblox-fottage-of-someone-hacking_GM431946152.pdf
- https://miraller.com/upload/files/how-to-get-free-robux-in-1-second_GM431946152.pdf
- https://miraller.com/upload/files/como-hackear-roblox-para-tener-robux-con-cheat-engine_GM431946152.pdf
- https://miraller.com/upload/files/free-spin-in-coin-master_GM406889139.pdf
- https://miraller.com/upload/files/roblox-no-login-free-play_GM431946152.pdf
- https://miraller.com/upload/files/can-u-get-free-robux_GM431946152.pdf
- https://miraller.com/upload/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
- https://miraller.com/upload/files/how-to-disco-hack-roblox-games_GM431946152.pdf
- https://miraller.com/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdf
- https://miraller.com/upload/files/android-coin-master-hack-2021_GM406889139.pdf
- https://miraller.com/upload/files/bucks-gg-free-robux_GM431946152.pdf
- https://miraller.com/upload/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdf
- https://miraller.com/upload/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
- https://miraller.com/upload/files/roblox-18_GM431946152.pdf
- https://miraller.com/upload/files/get-1b-robux-free-no-hacks-roblox_GM431946152.pdf
- https://miraller.com/upload/files/coinmasterfreespins_GM406889139.pdf
- https://miraller.com/upload/files/minecraft-java-edition-key-free_GM479516143.pdf
- https://miraller.com/upload/files/roblox-how-to-give-self-free-robux_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003251.bin` `841a7493eead337d36e0ca58f8bff8c0c7e99d1e8191b5fcd4196b5fa2969dc2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3251	22836 bytes
`font_01_sfnt_off00006561.bin` `c25bf2ccf62891d313ed3764541f4ceda4a1232ebb6e41c4eeb59875a69821a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6561	18824 bytes

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