PDF malware analysis — malicious · f72c0f5c690330fa

MALICIOUS

PDF

35.9 KB Created: 2021-06-26 13:45:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: b777587d214dec935fbf2ad97a396a2d SHA-1: d4974f82a0b58121fe7df70884e4e30af33b895f SHA-256: f72c0f5c690330faac1388ec5719557ec049c7cc25d6fcf434c93da771f66937

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links. The primary URL, http://netcdn.co/app/431946152/sign-in-to-roblox-for-free-game-hack, suggests a phishing attempt related to game accounts. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/sign-in-to-roblox-for-free-game-hack
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-hack-coin-master-game-2021_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-quiz_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/boku-no-roblox-remastered-buy-hack-sellygg_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-make-free-admin-in-roblox_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-spins-coin-master-facebook_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-free-rocket-fuel-roblox_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-generator-no-verification-2021_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-no-verification-2021_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/100-free-spins-coin-master_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/minecraft-hack-download_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/moonactive-coin-master-free-spins_GM406889139.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/minecraft-mods-download-free_GM479516143.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-avatar-roblox_GM431946152.pdf
- https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-fun-com-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_off0000353c.bin` `f3755eb1482ebe6b302da693d7f088c1542560789fdce068353537600b383a4c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x353C	22776 bytes
`font_01_sfnt_off0000681f.bin` `cd0d7dde3537b0933eae3b527e7a984cd35740614fae3983400cb0104361b5d5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x681F	18768 bytes

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