Malicious PDF — malware analysis report

Static analysis result for SHA-256 44507fbcd198bfbd…

MALICIOUS

PDF

53.3 KB Created: 2021-06-03 09:40:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-10
MD5: 12d45a1208406ee063aaf38a40fbe2b3 SHA-1: d595d569c5b3338b0e9c4a04907dc0771ba19791 SHA-256: 44507fbcd198bfbd9e078cdc7305856a9804a5b003c5ceee768bccae96054232
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9577

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.online/app/406889139/are-there-any-coin-master-hacks-that-actually-work-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-g_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005572.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5572 24824 bytes
SHA-256: 9c2ebdb337a4803d8f70af0ca466d64216463af11889b194d1c0d3357eacd44e
font_01_sfnt_off00008da5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA5 3204 bytes
SHA-256: b7fe42cb1da39e96c756399b3532633df029c1fbb3443b9e17d98df25c90dc65
font_02_sfnt_off000098a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A4 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off0000ad2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD2F 18472 bytes
SHA-256: cbcebafbcf3f0ede5aa3be7eddcb12699961b73018073e13810fb2a936e6d0ab