Malicious PDF — malware analysis report

Static analysis result for SHA-256 f993c69e4c1a7457…

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 09:18:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-13
MD5: 66bda7471b6901ff984940313696daa6 SHA-1: 1b7752c2fd4c42b8f48285e8147d2b4c5caed12a SHA-256: f993c69e4c1a7457537d893480d073c5b53eddd16a0a8a56b2a2401884eccf62
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/microsoft-roblox-rewards-game-hack In PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/pokemon-go-free-yanma_GM1094591345.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/free-roebucks_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/pastebin-robux-hack-v6-5-mythical-chaos_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/mcpe-116_GM479516143.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.man1bekasi.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021-iphone_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_off0000329d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329D 22512 bytes
SHA-256: bdf432e79e0ddc8cb78bd6a9df21764ecfbee00618b4f5c2d24880e99e63a68f
font_01_sfnt_off000064d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 19244 bytes
SHA-256: 15236a9164adcceeeabc7c563dc8d3c1b4330ca6f2c8a0eb4af9903fd5553319

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