Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc85e05eb3c95a3…

MALICIOUS

PDF

46.0 KB Created: 2021-06-09 14:17:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 04366ba5f8306db6108b0253d9327b7b SHA-1: 5cb7ee8120f740420aee79f6b15b4f8a2f0ff8f7 SHA-256: 1dc85e05eb3c95a34820055d244a226c9154c7fc64db92bdf7c70bde27b06b9b
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/can-you-get-unbanned-for-hacking-roblox-game-hack In PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-fast-ponits_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-phantom-forces-rank-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-roblox-card-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/robux-app_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://discordIn 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
stream_004_off0000515b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x515B 25688 bytes
SHA-256: bea72762498b0ab80a699635cbb417652f69e089643ee39337d4f7d24530c4ae
font_01_sfnt_off00008db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB3 19520 bytes
SHA-256: a0835d0e47191f564d685469f772f4c06bb61ef758a576926b46e26241718c77