PDF malware analysis — malicious · c43f8d93a613839f

MALICIOUS

PDF

36.3 KB Created: 2021-06-19 20:34:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 33ae59a8a75b34989f49eab653e472ce SHA-1: cd8c95c69fa59f1b5e78c33b15d654309390f811 SHA-256: c43f8d93a613839f01f7aca8f54a031e332781481f48ce59361d1d0d0c9b3db6

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs and a document body that promotes 'free Robux' and 'free Minecraft hacks', indicating a lure for users to download further malicious content. The heuristic 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' strongly suggest malicious intent. The presence of multiple external links points towards an attempt to redirect users to malicious sites for payload delivery.

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/can-you-give-me-free-robux-game-hack
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/free-minecraft-hacks_GM479516143.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/roblox-hack-generator_GM431946152.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/gold-card-coin-master-free_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-vip-hack_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-hack-spins-free_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/no-verification-coin-master-hack_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/free-roblox-items-codes_GM431946152.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-hack-version-apk-download_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-free-attack-link_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/minecraft-for-chromebook-free_GM479516143.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/coin-master-hack-apk-free-download_GM406889139.pdf
- https://www.johnofrolleston.com/admin/ckfinder/userfiles/files/free-spins-on-coin-master-without-human-verification_GM406889139.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_off000034a9.bin` `77c31361e19b76dd1792ce82c71c069e81bd87d51ed47603bc065055ea300d9c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x34A9	22840 bytes
`font_01_sfnt_off00006832.bin` `213ffded7258ab8d7e86bc9b0b46cd506f05a04d5a82a378b686a68272e78f09`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6832	19308 bytes

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