Malicious PDF — malware analysis report

Static analysis result for SHA-256 478f8a586535eb35…

MALICIOUS

PDF

32.9 KB Created: 2021-07-01 08:58:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 21b1df8f46a462e974f2d5d5ebb0a965 SHA-1: f55917c9f12b4737fe75ee2ffcc7bcc333e8edfd SHA-256: 478f8a586535eb35101848c82a43231712684a22eb7dcab0b04f80f2586a96a7
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/hacking-doomspire-brickbattle-roblox-game-hack In PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-cheat-net_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/cheat-engine-tutorial-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-hack-las-vegas-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/are-any-of-the-free-robux-things-legit_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://pn-tapaktuan.go.id/pustaka/repository/goku-roblox-free_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_off00002b7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7C 21536 bytes
SHA-256: feb20de59f4ba52e5c5aab9ce1ead5167698453da27d4d01c8ca6420419a6b53
font_01_sfnt_off00005a8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8D 19484 bytes
SHA-256: 921b42b99a6155a1f67ff49ce8d9d49684a38074c3682140033e42848ad71e84

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