Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e3f5c5ee626f9b3…

MALICIOUS

PDF

35.6 KB Created: 2021-06-24 05:29:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6a3149d300164ef0e1f3fe3203addf4b SHA-1: b4b1e4ad44d707b1d85bf8e6e36520781a34fa0c SHA-256: 5e3f5c5ee626f9b3111244ab25f38feb17d68af201c8a9e883969f6e1a3e7627
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a redirector for game hacks. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/406889139/coin-master-free-redeem-code-game-hack PDF link annotation
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/bc-free-roblox-android_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-custom-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-hack-a-roblox-account-with-editthiscookie_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-codes-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-roblox-svg_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000343d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343D 23184 bytes
SHA-256: 6234d94381fffb4b34fa9dd0bff2bfb5526bcff5e7927c7bd0ea555a33b834a3
font_01_sfnt_off00006859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6859 18432 bytes
SHA-256: 5dea6828f10c6d475ac08eedb2a46cdce9e4f7fa2af90066785ff5216698df8b

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