Malicious PDF — malware analysis report

Static analysis result for SHA-256 478bf5eaa2cf2081…

MALICIOUS

PDF

35.2 KB Created: 2021-06-29 20:44:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: dff2ba78d0e83a367b7a54b2cd0f5784 SHA-1: cdca2c168a67058e1861a51fa6dfdbfd4c76397b SHA-256: 478bf5eaa2cf2081c70a16b91de4bf0bb810e03791bdcec3d3d195fadfb4f97c
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.co/app/431946152/free-robux-leaked-game-hack In PDF document text
    • https://library.pqm.co.id/repository/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-roblox-explot_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-boga-boga-infinite-mojo-hack_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-hack-menu-jailbreak-2021-abril_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/robux-for-free-quick-and-easy_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-robux-promo-codes-valid-2021_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.pqm.co.id/repository/wear-trash-gang-merch-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-get-free-robux-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • https://library.pqm.co.id/repository/how-to-get-free-robux-no-clickbait-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000321a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321A 22636 bytes
SHA-256: 4d056ab99b0381b83fe6eb30b0bef3be998c5c1a7d3d5dc4e72e30f2c8149103
font_01_sfnt_off000064b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B7 19060 bytes
SHA-256: e122b051cf16a14980a7e70a08bfbb207166eb04eba634ba2621d646e5fa7048

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