Malicious PDF — malware analysis report

Static analysis result for SHA-256 78285e7d119d1ea0…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 11:08:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: edff9d960a4a40a914d45a4db5af22ec SHA-1: bf48ab71c97b3804734f46dae4a53f1bb1d770e2 SHA-256: 78285e7d119d1ea09b6a834d844d46af2b889e82450f1ffb461da6806dfacfa4
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.tw/app/431946152/blox-pink-robux-free-game-hack In PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-cheat-codes-for-robux-2021-on-tablet_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-vehicle-simulator-money-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-hack-wearedevs-not-injecting-how-to-fix_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-jailbreak-unlimited-rocket-hack_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://perpus.upp.ac.id/digilib/repository/roblox-games-that-give-you-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_off00002edb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDB 22296 bytes
SHA-256: 0bac243bce3d479465ffd88b27495c286ba6e98e0be1eaed23c6d0c6d2874718
font_01_sfnt_off00006064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6064 19236 bytes
SHA-256: 6d963c1d822a08bc1abb96cac55b62bb3f347e081a60883ac392d5c6c816e908

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