Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced208dc875bfef0…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 05:16:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3c4d8e83e2849a37424dd3c634fefb2b SHA-1: 51abeabc8b311c5bacd47354e9ea1eefa1a7f773 SHA-256: ced208dc875bfef0960f3105a571bb33ecba4004630e11cdc2863cf9c0baae4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to known malicious infrastructure, disguised as a game hack generator. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is the primary indicator of malicious activity, likely leading to a further stage of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-links-for-coin-master-game-hack In PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.crackleybank.staffs.sch.uk/admin/ckfinder/userfiles/files/how-do-we-get-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_off00004c05.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C05 24248 bytes
SHA-256: fb311c8b44bb1d32be3257a85f72090e93f574aee574bcb184499708c3adc3fb
font_01_sfnt_off000082c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C7 17880 bytes
SHA-256: a04fca5b08559e76c7fc5751e50b7e5576d0693cd390b0db561ab022dd525d54

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