Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd480baf2c6663e…

MALICIOUS

PDF

36.6 KB Created: 2021-07-03 22:37:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 3ff8664dfe8c9841d32eb913df54e8b4 SHA-1: e6cc514d9a38dae3ae7984ec8180f0a6ec62dc68 SHA-256: 3dd480baf2c6663e435d7f3915174c5a3e47858131a3135cce7895018d16eeaf
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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/835599320/tiktok-free-online-textbooks-game-hack In PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-clothes-catalog-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/roblox-admin-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-no-human-verification-2021-working_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-make-a-private-server-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/how-to-get-free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.idia.ac.id/repository/free-account-that-has-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3153 21700 bytes
SHA-256: 94b5008b4b3a017818dff1661c78f1dc0f210631bff59e472a0b9cfac092df84
font_01_sfnt_off000060f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F2 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off00006bab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAB 18416 bytes
SHA-256: 6634d32492ed6f49f1be3ed5aa61d145fb228908a778c32ced0b4f68853874e6