Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afbee42192a1b79…

MALICIOUS

PDF

226.6 KB Created: 2021-07-05 21:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 3a5bc0df4bf6366147202d0e458f919c SHA-1: 1ded0d9e9c62a1fab44aa44fd04c541e3c87d6af SHA-256: 4afbee42192a1b794244a0967869d9008ae8df0659ba3e8082ec96086f8297b2
250 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0118

Heuristics 7

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/1094591345/pokemon-go-free-pokeballs-promo-code-game-hack In PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/pubg-uc-recharge_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-hack-unknowncheats_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-uc-pubg_GM1330123889.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/roblox-hack-pc-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/pro-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn4pessel.sch.id/__statics/gudangsoal/files/coin-master-200-spin-link_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
stream_023_off00031e99.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31E99 25576 bytes
SHA-256: 5dc8b477213e4a1660913cf2ff85e073d02c69d70bac53a5cfaddbac18106273
font_01_sfnt_off00035a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A9A 18764 bytes
SHA-256: 2b8d77f3b755521c953943a53ea9c9bdc7eddb4f44d5f0c70a9198131f80890d

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