Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c747a56b0f1a5de…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 08:07:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 51507577370e0cbdc19046574061aafc SHA-1: da7751ed23e8dff3fac63a7926380f329e7e9cf1 SHA-256: 9c747a56b0f1a5de5536dad31e62e260f888d42076433e1b80d73750527d6da4
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 0.9865

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 https://netcdn.online/app/406889139/2021-coin-master-hack-game-hack PDF link annotation
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/server-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.stedwardscheddleton.co.uk/admin/ckfinder/userfiles/files/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D5E 29448 bytes
SHA-256: 193c796951c3985615b5ab59868a561b41f4dcb95363a2b6c75b7fedf4863287
font_01_sfnt_off00008907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8907 18116 bytes
SHA-256: 920b3105a00d2e81b44cb3def78d47879883f677e8f7cd602ed441085c36723f

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