Malicious PDF — malware analysis report

Static analysis result for SHA-256 54421308cef41cf9…

MALICIOUS

PDF

47.2 KB Created: 2021-05-17 13:40:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 39cda87db870227478d4b4d29ee853b2 SHA-1: 00723ca34ab48e195f832a8dd3209ea141bbf9a3 SHA-256: 54421308cef41cf900410baab933ccdd097bac3ac29a88f28eb857f35a978401
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure and websites advertising game hacks and free in-game currency. The heuristic firings indicate that these links are associated with malicious redirectors and lures for game-related exploits. The document body, though partially garbled, contains references to 'Coin Master Free Coins Link' and a URL that aligns with the malicious findings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 https://netcdn.xyz/app/406889139/coin-master-free-coins-link-march-2021-game-hack In PDF document text
    • http://kulturlandschaften.eu/images/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://kulturlandschaften.eu/images/minecraft-switch-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C4 24460 bytes
SHA-256: 29266c2254a1b69e8d31792d10dbd5d4b21c09ec69779b171aab629d70210e62
font_01_sfnt_off000080ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EC 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009577.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9577 18448 bytes
SHA-256: 53fc9b00e8334927a06c417505ef1231a561c67dc2332cbf65c5abe9a93c6d77

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