Malicious PDF — malware analysis report

Static analysis result for SHA-256 4254f02816449911…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 04:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: e643facceb567f94f3c1c74683898e3a SHA-1: 3ddf419799ddfeee01971f798521ac7453658fc0 SHA-256: 4254f028164499111fd9ae0b9c2e3c8b5fff99f0a8af76968ecd5e6f399c5243
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/406889139/coin-master-70-spin-link-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/codes-for-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/descargar-roblox-hack-adopt-me-para-pc_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/get-free-items-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/trigon-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-no-password-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/real-coin-master-free-spins_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_off00002f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F23 22032 bytes
SHA-256: a42c7400270a2f98133cf6125e9e765664a2001eaa2a38ed45fda88140ff8d24
font_01_sfnt_off00005fba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBA 18408 bytes
SHA-256: 316924fe7a637b0af78a439fcac8455cfd3756d9fde101b7ffeceeaf4bf174e0