Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d89d10fce69c2d8…

MALICIOUS

PDF

45.6 KB Created: 2021-05-12 09:37:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: c8b748ebd6066a68706514e1ef04e7e2 SHA-1: 24d1945a44c21ff0bd47869b48ab5222ae363f9a SHA-256: 5d89d10fce69c2d8aec591f0c93b1631d55e34aaf0da460af23cdcf4731a3dd2
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/406889139/coin-master-free-spin-daily-bonus-game-hack In PDF document text
    • http://www.duchidicastelluccio.it/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/mcpe-client_GM479516143.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://www.duchidicastelluccio.it/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000495b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495B 25796 bytes
SHA-256: 3e5af37e76592f316447126716af62f1530e86e1bc3423b345ffbdaafa800355
font_01_sfnt_off000084ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84FF 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00008e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9F 18664 bytes
SHA-256: 29d8625a2420ffd124556d82128af1f24a8175557156c607f082fe8065d24199

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