Malicious PDF — malware analysis report

Static analysis result for SHA-256 782df75b8fcb60f5…

MALICIOUS

PDF

42.8 KB Created: 2021-05-18 00:38:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-16
MD5: ac5c17356972e1864840f08bf44c64dd SHA-1: ab82fd5b11f8bd75797f6688d295348e12785bff SHA-256: 782df75b8fcb60f584f9ba13d0a5f4b0ea656b38284de1118b889c876fd198e5
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/robux-websites-2021-game-hack In PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-wheel_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/freerubux_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://marstechmedical.com/uploaded_files/userfiles/files/bad-minecraft-free_GM479516143.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
stream_003_off0000476a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x476A 26552 bytes
SHA-256: dd98bee16d1853f14fc770ebd437f45e847d941ebb21042c36f344f4321f0104
font_01_sfnt_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 18676 bytes
SHA-256: 8e35f60a006eed5ffc493481045aa1980878ced5d77eb8f37738a10bc05aa5ba

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