Malicious PDF — malware analysis report

Static analysis result for SHA-256 1911e1a076557bf5…

MALICIOUS

PDF

48.4 KB Created: 2021-05-14 12:31:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-23
MD5: f0d786423b5ff667eb6219359fb660d5 SHA-1: 254f2ace5a7bd848a2d60878153a0e3362e73055 SHA-256: 1911e1a076557bf5ed1425b5a7f14d74435a0b7b7b37ceb46d3094b5a937dea0
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-spins-link-download-game-hack In PDF document text
    • http://ghegamethu.vn/images/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/robux-match_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://ghegamethu.vn/images/www-cheatsk-com-coin-master-hack_GM406889139.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_off0000497f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497F 32476 bytes
SHA-256: ed3af31bc636297142bcf6fc20058dd74767952a4087791e2b654b96fb96611e
font_01_sfnt_off00009047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9047 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000099f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F8 18636 bytes
SHA-256: e0ee4d28e9fbd90893640acb023fdb3433a7d18e360fd79b0a1965f7934d0c46