Malicious PDF — malware analysis report

Static analysis result for SHA-256 152865897488a374…

MALICIOUS

PDF

34.7 KB Created: 2021-06-22 18:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 83a9aa4b91e39be6cfbbf3f387e01e2a SHA-1: a37c81d47e1db2f66a004150d3ed75c44a7e6c68 SHA-256: 152865897488a37486bf4146fdd789198593ecac1382b5b4d5324da7dcd36522
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous embedded links, many of which are presented as download opportunities for game-related cheats and hacks. The primary URL, http://netcdn.co/app/479516143/free-minecraft-bedrock-game-hack, suggests a lure for potentially unwanted software or malware. The heuristic findings indicate a link farm and a high ML classification score, supporting the malicious verdict.

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/479516143/free-minecraft-bedrock-game-hack
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/isuku-roblox-free-shop-t-schirt_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/hacks-minecraft_GM479516143.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-robux-without-offers_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/link-coin-master_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-cheat-apk-free-download_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/robux-free-robux_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-adopt-me-hacks-2021_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-codes_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/daily-spin_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today-new_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-get-free-robux-ipad_GM431946152.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-link_GM406889139.pdf
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/irobux-com-redeem_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033c4.bin
f66ec66ae32ab93d17f282edf2f1af245e238e22dde71677a6d5d70a43b7c435		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33C4 22056 bytes
font_01_sfnt_off000063fc.bin
8a1cf310a32837577002de6ae703504663fc8f6c74f3557264522e251e416ebe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63FC 18560 bytes

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