Malicious PDF — malware analysis report

Static analysis result for SHA-256 941efedb843fb809…

MALICIOUS

PDF

48.3 KB Created: 2021-06-07 14:48:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 6954205ff03b57faa1e257f83f6f1148 SHA-1: a0181b5f3b0414e05fe738f82df41b8c26f168af SHA-256: 941efedb843fb80910d083a60e67eec38daf0e30fc77fc8b61ed43987946d127
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/how-to-hack-sword-fighting-tournament-on-roblox-2021-game-hack In PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/abd-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/earn-robux-sites_GM431946152.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id//repository/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://perpus.poltekkes-tanjungpinang.ac.id/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000052d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52D3 24316 bytes
SHA-256: 905cc53cabccd73628a0bcf84cfe16fda3fd91a3102333db06b546551a0c5876
font_01_sfnt_off00008a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8D 2880 bytes
SHA-256: 552e62132cae3603ce0819827e44d96a992bd06014cc5080bf3af4b2ea155b3e
font_02_sfnt_off00009465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9465 20164 bytes
SHA-256: 0eb85a78cc8f808803352e2d3ac40d0168faa5eae1d142dcf572fd748d7a8c7f

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