Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e6a28b2b55bc3a…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 06:16:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9f26f7f758516427a6b80787c9074cb6 SHA-1: 41b7b3a89988b6246647b7e31af18b4d3e6965a4 SHA-256: 73e6a28b2b55bc3ae6cf412d48df0288d1986a5a9b1cac9446bb95453d74826f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs and a prominent call-to-action phrase, "CLICK HERE TO ACCESS COIN MASTER GENERATOR", suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the URL http://netcdn.tw/app/406889139/hack-game-coin-master-game-hack, which likely hosts the malicious payload.

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/406889139/hack-game-coin-master-game-hack In PDF document text
    • https://fib.ub.ac.id/sac//repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-ios-app-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/www-free-robux-party_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-rixty-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-with-inspect-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-capatcha_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/i-hacked-fgteev-duddys-account-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-hack-in-booga-booga-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/trouver-la-partie-dun-joueur-roblox-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/master-coins-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/tiktok-follower-bot-free_GM835599320.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-and-tix-on-pc_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/how-to-get-free-robux-on-fortnite_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_off00002f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F72 22724 bytes
SHA-256: abb943331ad628e208f1b46479bef89da693a0d3e2055f77c5bfbc9664598c4b
font_01_sfnt_off0000624d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624D 18264 bytes
SHA-256: 5f1b6d09a0bad61aa3d888ffd8d12dad277b47eefc04d0416292618a0547d003

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