Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d84d2612c9d8415…

MALICIOUS

PDF

35.7 KB Created: 2021-06-28 02:12:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: f5993f64dbc50e786719ad7e57b70197 SHA-1: 3ac3100bf178f7b3660fc574451db7cd3dd32c64 SHA-256: 5d84d2612c9d84158e4223e827a3401f990ed3cebc6fbbca1e5c7178a2812bb6
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/how-to-change-your-name-on-roblox-for-free-2021-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/bypass-chat-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-games-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/youtube-roblox-how-to-get-a-free-dominus-tofu_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-hide-and-seek-extreme-cheats_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-blackhawk-rescue-mission-2-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/easiest-way-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-without-human-verification-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-robux-easy-no-download_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_off00003042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3042 23300 bytes
SHA-256: b5b7d38b9454543245f0a4c6c2e6dde3ecf7359f5f0e66f324642f4aba78214a
font_01_sfnt_off000063e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E2 19944 bytes
SHA-256: a15fbc84647a35174b9a3a425296907c71fc7af9668a730b93eff68992424769