Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e386dddfe1f77e9…

MALICIOUS

PDF

49.5 KB Created: 2021-05-14 16:07:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 775a8b07985ab60b9bf1a4be0f86334a SHA-1: 3773197c756733d57b8b4988f3f68256a1e6ee46 SHA-256: 4e386dddfe1f77e997142974d123ddbcc0e70182f6f7341b70de9058a95e152a
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/free-coins-coin-master-link-game-hack In PDF document text
    • https://malungtreks.com/userfiles/files/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bfb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BFB 29152 bytes
SHA-256: bb6aa87dd944ae896fc79f34d7a332bf338b8c6672389269227e913ae129adb3
font_01_sfnt_off0000886b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886B 4028 bytes
SHA-256: a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91
font_02_sfnt_off0000960b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x960B 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FFA 17880 bytes
SHA-256: 1662a5b383d9ad60b7b9cee618f90cf0031b74e1c8940e2d562def689eb52552

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