Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b63c4bad2986b4f…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 23:37:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 40e193ae07ae7eb60694a7bceed7aefc SHA-1: 6ba24aec56d0188c0d3d7fccd53e04dc3bdee534 SHA-256: 2b63c4bad2986b4f5e5f2bef14a673e35cd0a4d5c8742b3ba45b7e723d605bda
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/coin-master-daily-free-spins-link-download-game-hack In PDF document text
    • http://lib.mbp.ac.id/repository/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/tiktok-views-free-2021_GM835599320.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-spins-link-download_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
stream_004_off000050d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50D2 25080 bytes
SHA-256: fe21851302d653620859db3b00a7fa0c7252c5d09aa24578263582439197c4f1
font_01_sfnt_off000089f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F6 18816 bytes
SHA-256: 9c26c181c4cdabeaa0059472f140f722c9ebd74ce71ebd91f88ed40d9942d1a6