Malicious PDF — malware analysis report

Static analysis result for SHA-256 63bc817bc327f86a…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 09:59:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 01fa7589318e7ad3254655f57db67b4b SHA-1: ee1198ce43d459e1bbcefc8881a879984b6556ad SHA-256: 63bc817bc327f86a1db6215b4cb3bdfea03a44a9f0912698c6a837147f5bb448
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-book-collection-game-hack, which is part of a chain leading to potentially harmful content. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to malicious sites.

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/479516143/minecraft-book-collection-game-hack In PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/lemonade-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robot-animation-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/project-pokemon-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/gamefreaksz-co-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-free-codes-jailbreak-for-money_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-is-it-free-to-play_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/hack-para-counter-blox-roblox-offensive-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/roblox-hacks-2021-for-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan-pelita.sdnpercobaan2yogyakarta.com/repository/free-robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E9 21756 bytes
SHA-256: 59e035425a37867e926454a53df456bc6722cfa09bd6f8f4f9c9a959447b9a19
font_01_sfnt_off000064c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 18460 bytes
SHA-256: d4ee59d4009559a10760f1b4f681366fcc14c243429bee840e8cca7020b3171d

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