Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87ea8a50eeb239e…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 07:15:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: bf681050500ddf13d3c35e053bb39b54 SHA-1: bda1775ca639e696b729dbd99dfbbb85e10bfa5b SHA-256: f87ea8a50eeb239eda4954f02d2ecccea16454e51fd8da666c6e521c58ba902d
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/simple-way-to-get-free-robux-game-hack In PDF document text
    • http://lib.fekon.untad.ac.id/repository/youtube-robux-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/download-speed-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/fnaf-free-roam-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hacker-takes-over-roblox-streamers_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-change-username-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.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/free-robux-generator-app_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hacks-injector_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/hack-my-roblox-account-freee-no-downloads_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-folder_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/can-roblox-tell-if-you-are-hacking_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-tower-battles-credits-hack_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_off00002ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECE 22420 bytes
SHA-256: 7c6542cd1fa63b55b9cc79bb23e92a01aedd8d72d277b488e7dfe33a8bd07120
font_01_sfnt_off000060b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B3 19828 bytes
SHA-256: fca689df0ba14a03520f88a31258052da4b75601ab2d3e1f2818f6a17dcaf070