Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb306cfe1bb60430…

MALICIOUS

PDF

45.1 KB Created: 2021-05-14 20:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f5be5e261b80983ea82340d7e5e3fec2 SHA-1: c6b6cb43a88d31350eaad24309d24121171af274 SHA-256: fb306cfe1bb60430649d241f606ed6279ea361279768d1528af86ea79cb0e2ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting "game hacks" and "free spins". The document body and embedded links suggest a lure to trick users into visiting these sites, likely to download further malware or engage in phishing. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/how-to-get-free-spins-on-coin-master-game-hack In PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://beestonprimaryschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-ios-cydia_GM406889139.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_off00004be5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE5 24800 bytes
SHA-256: 3491775d8d4efef4c88f5f14cb5d71ebae8d90dfdb46f34b142291aed310b9c5
font_01_sfnt_off000084e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E2 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 18052 bytes
SHA-256: ea84a6236c2a6e621998df031dd6ced14717eafc49be4f8ccfac8b30b37a9d36

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