Malicious PDF — malware analysis report

Static analysis result for SHA-256 4789fb6c8cf91b89…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 09:34:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 425d057205b9fb4c00fc8d77f9e664c7 SHA-1: 8271dbae3a0bb8988e6737bfa4b87b1b4c2a01ae SHA-256: 4789fb6c8cf91b89f19b1aee21a9797ac2473275ec817f2b19f882a1055b24ae
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.co/app/431946152/roblox-epic-rap-battle-cheat-game-hack In PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-limiteds-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-a-free-dominus-hat-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/prison-break-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-2021-late_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/actual-up-to-date-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-dragon-ball-z-final-stand-cheat_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/is-it-possible-to-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-online-coding-courses-for-kids-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cool-free-roblox-outfit-without-clothes-and-colour-body-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hacks-for-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-apk-free-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
font_00_sfnt_off0000327d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327D 22564 bytes
SHA-256: eddc918f9c378781453f01e4552eed7c9e28ee56316724e65a098948decceae6
font_01_sfnt_off000064cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CD 19052 bytes
SHA-256: 76c55c65e25e2a90cad233b35c94cfb37fce638d662e1c5628f2c62dee83a6be