Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b9f16ec1220c03d…

MALICIOUS

PDF

40.8 KB Created: 2021-05-17 03:09:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f140f65e4af37b44b0a5a47790761608 SHA-1: ade381f726b4b0a68551c31dd409b7da195ec27c SHA-256: 5b9f16ec1220c03db5558cc3deec943c55c01df1708d7e2317594c5ccfbdf8dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/hack-crack-for-coin-master-currency-game-hack. The document body and embedded links strongly suggest a social engineering tactic to drive users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/hack-crack-for-coin-master-currency-game-hack In PDF document text
    • http://www.torvet11.dk/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://www.torvet11.dk/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.torvet11.dk/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.torvet11.dk/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.torvet11.dk/images/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.torvet11.dk/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://www.torvet11.dk/images/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://www.torvet11.dk/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.torvet11.dk/images/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://www.torvet11.dk/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.torvet11.dk/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://www.torvet11.dk/images/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.torvet11.dk/images/coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.torvet11.dk/images/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004754.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4754 23584 bytes
SHA-256: 0a927ee38a3fde2d16335484954469d18547b0220457574384f07584915b351b
font_01_sfnt_off00007d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2E 18200 bytes
SHA-256: a4065947dd7f6e5eda37ae81e5cddae0dd41603404a555eeb787a708b7a40094

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