Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fecc29781a63c7d…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 18:10:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c297d6f01377d799285d55462a955f7e SHA-1: a80c1587194c2781c805bf92aafe54015e7dea82 SHA-256: 4fecc29781a63c7db604852587cb64efa18c2ad54f88b125c37e5f3484dce8b8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with 'game hack' content, indicating a phishing or scam attempt. The embedded URLs likely lead to further malicious content or downloads. The document body, though partially corrupted, contains references to 'Coin Master Hack Link' and URLs consistent with the heuristic findings.

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/coin-master-hack-link-game-hack In PDF document text
    • http://hk-kan.org/images/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://hk-kan.org/images/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://hk-kan.org/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/free-online-minecraft-server_GM479516143.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_off00004847.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4847 26032 bytes
SHA-256: 2fa3b911209e4562b4324b1f3033c8dc2cdc302d9889ac9f528004ca0ad73ae3
font_01_sfnt_off0000852f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852F 17716 bytes
SHA-256: c15a8689411d8cca9ab0759ab4c496fe9b4353d676dd738e300719e9588112ed