Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6eb22336185f420…

MALICIOUS

PDF

44.1 KB Created: 2021-05-17 22:34:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5bdb54648263e654b2f0e5a70b138dbb SHA-1: 26c391b17e27d440ff4becd54f59edb52945b61e SHA-256: f6eb22336185f420cbb2de243fd61851495cfbf3d7490d9ebe0fc0fbb2c4aaf5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, including one that masquerades as a 'free generator / game hack'. The document body, though partially corrupted, contains text related to game hacks and generators, reinforcing the lure. The primary malicious action observed is the redirection to potentially harmful websites, likely to deliver further malware or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/free-spins-coin-master-cheats-game-hack In PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/no-human-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://s4sbrochure.org.uk/admin/ckfinder/userfiles/files/minecraft-launcher-free_GM479516143.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
stream_003_off00004aa4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AA4 23952 bytes
SHA-256: 3c244487ce6ebe56b2c3dc819bb3cb74364a0c7014e5d68d915715e26fa57894
font_01_sfnt_off000080e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E1 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A93 18052 bytes
SHA-256: 646ed736691e24b0aca15324257056c8ac0b7af913b76a93602a047b34ada573

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