Malicious PDF — malware analysis report

Static analysis result for SHA-256 65366bcd6e0f25f0…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 22:33:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 18cf49e26f68edfe8dce41f2d776b002 SHA-1: dd8c51d504cb7df5b122fbbb141e47f22742a602 SHA-256: 65366bcd6e0f25f040cce85463629627d769ee5cbcc22e02b88fbc965dc695bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free spins" for popular games. The primary redirector URL is https://netcdn.xyz/app/406889139/update-coin-master-free-spins-game-hack. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself contains malicious links.

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/406889139/update-coin-master-free-spins-game-hack In PDF document text
    • http://moto98.com/images/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/hack-avatar_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/real-roblox_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://moto98.com/images/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/coin-master-money-hack_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_003_off00004875.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4875 25588 bytes
SHA-256: 8a97487eda3919748b56eeff72f36fcc957fd959fd64d397a1b99f0d40c82fc1
font_01_sfnt_off00008317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 18244 bytes
SHA-256: 27c09eb221378defc267f78e32d3c41c850d93aee8517152fbe062b354dcc493

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