Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e8fd2fc31d1297…

MALICIOUS

PDF

35.0 KB Created: 2021-06-18 06:18:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 84163b8091f5291b62b11f5e12d91219 SHA-1: f747d5166125283b3b56f7e3649535df5c711b21 SHA-256: d3e8fd2fc31d1297f1f6cd96a4a2f5e8e8f17d11f08d2d09b08f1d509b1fff09
220 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-free-png-game-hack In PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-a-free-code-for-a-robux-card_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-cheat-in-roblox-find-the-doges_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/did-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-pro-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/hack-mod-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-free-robux-easy-december-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/roblox-survival-games-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-robux-generator-no-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fksb.unismabekasi.ac.id/katalog-buku/repository/how-to-get-minecraft-realms-for-free_GM479516143.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_off00003378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3378 22180 bytes
SHA-256: dee930a8db4e88ca6cca1de2bef4bc6033d452e8efc65d8d5fa4f42e4a976684
font_01_sfnt_off000064b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B2 18804 bytes
SHA-256: f1973642ed456afb2df2271831f679d8d95df5366bf755f8c8f4cff5a23d42b8