Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7633465348878d…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 19:35:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 55d78928ed6101440a0f1e68c40fea86 SHA-1: ddeee955180b13e9586fc38efeea4445a341456b SHA-256: cd7633465348878d063a6d4de4777a79ee7ac0826e157c176ea3f2265fe1f137
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-tool-access-online-generator-game-hack In PDF document text
    • http://www.europeancamerata.com/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/roblox-gift-card-codes-25-free-premium_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/roblox-free-bc-codes_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/get-free-robux-no-hack_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/piano-keybard-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/robux-generator_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-roblox-pokemon_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-hack-generater_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/coin-master-free-rare-cards_GM406889139.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_002_off0000303e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x303E 22628 bytes
SHA-256: 207fea31b4eb4acaa313fa620a6ecbbc5e77c8df7a4f6d3f6d6d16e0144f8bd9
font_01_sfnt_off000062c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C8 18080 bytes
SHA-256: 466388122f55d8099f8a2cc4a3f5b35df7f53bc4c57d622fd163220439f445a2

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