Malicious PDF — malware analysis report

Static analysis result for SHA-256 a534d491b769b10a…

MALICIOUS

PDF

47.7 KB Created: 2021-06-08 13:15:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e5f3f6a420978e77666e72fb986cdbad SHA-1: 6b40815bc7717129f394a3cf52cc30f8eb81c6b5 SHA-256: a534d491b769b10a44802287b601b5569db81b96d9921cce02c932e8a4e6eddc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game-related currency or hacks to entice users. It contains multiple embedded URLs that lead to known malicious redirector infrastructure, ultimately pointing to pages offering these supposed cheats. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious workflow designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/free-robux-2021-november-game-hack In PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/roblox-invitations-free_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/how-to-hack-roblox-booga-booga-for-mac_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/script-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/roblox-jailbreak-noclip-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/roblox-admin-lua-script-hack_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-roblox-gift-card-codes-codes_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-free_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-in-real-life_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/como-tener-robux-gratis-2021-sin-hack_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/roblox-one-piece-rampage-script-hack_GM431946152.pdfIn PDF document text
    • https://meerdanverzekeren.nl/wp-content/uploads/fsqm-files/this-app-gives-you-free-robux-yt_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5071 27104 bytes
SHA-256: ae12a3e3e8ae907d9c0f3a7cd26b739033cfcc65fe7316fe7293f962ba2ea03f
font_01_sfnt_off00008c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C8F 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off0000963e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x963E 18792 bytes
SHA-256: 26f4057eb9d6867c8cfcf5f9284f9ee8af393eef569eb2e2d86e0b5ecdcb4dda

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