Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ff0d45f48f74895…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 07:47:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 249cd8dcdf270daae0fffe9762bac4df SHA-1: 98d0d506ee815e01f42f5d9af232771a598512f6 SHA-256: 2ff0d45f48f748953d8dcc92e5502714ff5c843edcabf380d56a6a0a0e5ea6e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "free generators" and "game hacks" for popular games. The primary malicious URL identified is https://netcdn.online/app/406889139/coinmasterfreespins-game-hack, which is used in a lure to trick users into clicking. The document body and embedded artifacts do not contain executable scripts, but the presence of malicious links strongly indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coinmasterfreespins-game-hack In PDF document text
    • http://global-brand.net/userfiles/files/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-data-breach_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://global-brand.net/userfiles/files/free-spin-online-tool-coin-master_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_004_off00004e98.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E98 24944 bytes
SHA-256: 7a31353a586fe1a51f414d260bae1b9198fc84ddd75137a793a4dd7fbef39cd8
font_01_sfnt_off000087a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A8 17980 bytes
SHA-256: 48872130680f0d6309128a4b322cbb0730700ec4544966fd5aa3d357de7636d5

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