Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd63941da7976533…

MALICIOUS

PDF

36.6 KB Created: 2021-05-12 10:18:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 42cd178b1451632d077b278ab2e1158b SHA-1: 7d7bbc3230d6c6fbd9a5239d507495562b3e7fdf SHA-256: fd63941da7976533a2bd9327e806eea0106b0767fb357bb4d65e2d5ba273d86a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and generators. The ML classifier strongly flagged this PDF as malicious, and the embedded URLs confirm a redirection pattern designed to lead users to potentially harmful content. No scripts were extracted, but the document's structure and embedded URLs are sufficient to infer a malicious redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/479516143/minecraft-bedrock-edition-free-with-java-game-hack In PDF document text
    • http://library.futureuniversity.com/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-assassin_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-sound-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/no-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://library.futureuniversity.com/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d62.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D62 25300 bytes
SHA-256: d9cf4e979be34573a304652e709d5171f12d49c683bccb6a4dfaf4c2aaad1bcb

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