PDF malware analysis — malicious · 4ed3cd9da95f9ffe

MALICIOUS

PDF

48.9 KB Created: 2021-06-09 14:54:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 42eee2ed5ae1df3540a890643e719121 SHA-1: acdbed65a5de69abb91d75f0aca3c7368f480918 SHA-256: 4ed3cd9da95f9ffe03804ed08e37879a7f04b97421555d3bef743d4d2f626f6b

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a malicious SEO link farm, designed to lure users with promises of free Robux and game hacks. It contains numerous external links, many pointing to other PDF documents hosted on the same domain, suggesting an attempt to drive traffic to potentially harmful content. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/how-do-i-get-free-robux-without-doing-anything-game-hack
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/roblox-hack-mod-menu-android_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/coin-master-hack-without-verification-2021_GM406889139.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/how-to-tell-if-you-have-been-hacked-on-roblox_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/dabi-roblox-free-shop-t-schirts_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/minecraft-windows-10-hacks_GM479516143.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/roblox-drivers-upgrade-download-free_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/free-coin-master-coins-and-spins_GM406889139.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/roblox-christmas-games-for-free_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/minecraft-windows-10-edition-free_GM479516143.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/in-roblox-how-do-you-hack-accounts_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/roblox-auto-aim-hack_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/minecraft-free-ios-2021_GM479516143.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/free-promo-codes-for-robux-2021_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/free-robux-hack-prohosts-org_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/how-to-hack-roblox-accounts-passwords-online_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/roblox-accounts-free-2021_GM431946152.pdf
- https://www.racoh.edu.gh/wp-content/uploads/fsqm-files/free-robux-scamgames-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off0000530a.bin` `694d91ca794a22b767d29fb3866cd87e406cdbe866a1a84c68d2a52b781c906f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x530A	24708 bytes
`font_01_sfnt_off00008bff.bin` `4c836a6246321303d10fca719808d35220b906ca76bbb44946cc04297e9ce808`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BFF	3948 bytes
`font_02_sfnt_off000098f7.bin` `4279bf1796e0d98962865bc5d73de441ea7fd558f85a1cbef1f3e3113d85468d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98F7	19400 bytes

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