Malicious PDF — malware analysis report

Static analysis result for SHA-256 64fe185e3638b5ec…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 15:31:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d81c394f0d705b53ec015b34b8507e68 SHA-1: a5db7f0f245028bc7b6cc6ecda2873eb239d866c SHA-256: 64fe185e3638b5ec68b357924fb8bf43de4abe676103e0b15f2f642816ef7720
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, disguised as "free spins" or "hacks" for popular games. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-2021-today-game-hack. The document's structure and embedded links strongly suggest it is a phishing lure designed to redirect users to potentially harmful websites, likely for credential harvesting or malware distribution.

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-link-2021-today-game-hack In PDF document text
    • http://finalstand.org/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://finalstand.org/images/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/how-to-hack-coin-master-in-pc_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://finalstand.org/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://finalstand.org/images/game-give-free-robux_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_off00004911.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4911 29240 bytes
SHA-256: 326d8dbe04a05074d75dc3f031b2dbc41a4a2eb698174c60e4bccaf3da163fbf
font_01_sfnt_off00008ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB8 18812 bytes
SHA-256: 705c5903f824403b328e8e9dbd2ab52a650d097fc3c0d4bbd34be772086d041a

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