Malicious PDF — malware analysis report

Static analysis result for SHA-256 9416384a9add129a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 21:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 692e2fd4dbe5da9b0fe9e22abe61e650 SHA-1: 70c104b792bd4b88283a84b208b298221a67ea53 SHA-256: 9416384a9add129a4a54e0e2bddb30c1f78dfbf87d4bbc0aa9943af4da44e352
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/431946152/ww-roblox-come-game-hack In PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-client_GM479516143.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-match_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-deutsch-ios_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-mod_GM431946152.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_off00003226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3226 21972 bytes
SHA-256: 81ddbf4cf77080ab851eb26967935a61da055f20e5f9d49f58790882dc06392a
font_01_sfnt_off000062aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 19108 bytes
SHA-256: 90580883745e156586b97c3ed689431169c004bf7d7dde53d905db1a3f24cb6d

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