Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b21ce215f4f676…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 15:10:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b5518acf55ebf296b57641c63496d2d9 SHA-1: ad3e7744d39f9231276e2e5980f4501a0ac03096 SHA-256: 47b21ce215f4f67628f1d0d41b695849c32532734579c9be1ee526ca243e9031
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded URLs and document body text that promote a "Coin Master Hack Apk Online", suggesting a lure to download a potentially malicious application. The ML classifier also flagged this PDF with high confidence. The primary IOC is the URL associated with the advertised hack.

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/coin-master-hack-apk-online-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hacks-pc-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/hack-engine-for-roblox-download_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-speed-hack-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-payaso-free-candy_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-mad-games-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-valid-roblox-promocodes_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-jailbreak-free-vip-server-link-in-the-desc_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-the-pizzeria-rp-remastered-give-all-coins-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-games-give-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-card-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-hack-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-anything-for-free-on-roblox-2021-inspect_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_off00003210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3210 22624 bytes
SHA-256: 8cb0aec6ebc8a4a3e9c80b02b93c230ee15a18d0d3c4a29fa5bf20de0b3c4530
font_01_sfnt_off000064a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A4 18252 bytes
SHA-256: 7c30a4e131e9e764ff8405716e7b29be65249b2c73aea01c93c83c8586e936fc

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