Malicious PDF — malware analysis report

Static analysis result for SHA-256 447bef2f03179999…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 07:34:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3f872a0210c805953092b282e6b5912a SHA-1: 6c1ea80534176e168c86c43042d11f7faa319243 SHA-256: 447bef2f03179999d2160ba9fa317fb419c7478898f489f6a6958e22dba32444
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites offering 'free generators' and 'hacks' for popular games, such as Robux and Coin Master. The primary link, http://netcdn.co/app/431946152/robux-hack-me-game-hack, is flagged as a malicious redirector. The document's structure and content strongly suggest a social engineering lure to drive traffic to potentially malicious or ad-monetized sites, rather than a direct exploit.

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 http://netcdn.co/app/431946152/robux-hack-me-game-hack In PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-to-hack-any-game-roblox_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/dll-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/free-hockey-mask-roblox_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-to-get-free-shirts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/earn-free-robux-legit_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/mouse-ears-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.mathershydraulics.com.au/static/userfiles/files/minecraft-download-free-download_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
font_00_sfnt_off000030b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B0 21736 bytes
SHA-256: 39a9323abea75ff9a773b413ead6440eaee115e6baad764465f900f142211afd
font_01_sfnt_off0000609b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609B 18916 bytes
SHA-256: d49e1575892b00f4a4e8cdcd45bcc6284cddefc71d3a5758140a1c9b54c8cd26

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