Malicious PDF — malware analysis report

Static analysis result for SHA-256 7efd8058467bc775…

MALICIOUS

PDF

35.6 KB Created: 2021-06-20 05:01:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 03afdbaa83df70ff8bce914d34f8d741 SHA-1: b013a97e899604d4188524642e5337fd40b5aaba SHA-256: 7efd8058467bc77502ae53e2964eac0ee5f2079d2c1b345f58a96dc8e6906f2b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-robux-giveaway-game-hack PDF link annotation
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-2021-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://www.springhead.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-a-minecraft-server_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_off0000343a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x343A 22084 bytes
SHA-256: 6803ada2fa69947c5ebc35685d972c1bf30cff91c9aaf060cb5594159310462f
font_01_sfnt_off00006578.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6578 19296 bytes
SHA-256: f9d47c8927f06aca09230474687c7e62d7780f8e0224e11b3e175debbf54a907

Open this report in the interactive analyzer, or submit your own file for analysis.