Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6a8f7a6af92dbd…

MALICIOUS

PDF

34.1 KB Created: 2021-06-17 16:36:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 446a02226fd8920d7d581c42ea960dde SHA-1: 61976123f7193f4729be74d22144c199d50fe52f SHA-256: 2b6a8f7a6af92dbd648e8f413a8b9302e241c51fd3c1b1c91d8d45fb033aa535
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/how-ro-hack-roblox-account-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-roblox-using-lucky-patcher_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-descargar_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-para-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/kachifpro_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/easy-ways-to-get-free-robux_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_off00002dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD3 22516 bytes
SHA-256: d8a94af6aea5f1db3fdd6a65b9cbb44cb2d987bcded6e8951dd65cb88a3152a8
font_01_sfnt_off00005fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC4 19064 bytes
SHA-256: ec397869de9e82fb3ed20cf13bd6ddac39200f5300215c7f5c2df16abc38b04e

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