Malicious PDF — malware analysis report

Static analysis result for SHA-256 578ef2eea11c043c…

MALICIOUS

PDF

35.6 KB Created: 2021-07-02 03:50:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5f08d97f856af04884cf6d69dbca9b58 SHA-1: 109705f41a5852f9ab80693a7af5e7e74494a4d4 SHA-256: 578ef2eea11c043cb33411a53a378e7a2b8508fb6a8f5e181b17ebee025538f8
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/how-to-win-free-robux-game-hack PDF link annotation
    • https://creationegyptco.com/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-use-free-models-in-roblox-studio_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-how-to-change-your-name-for-free-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000032e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E5 22720 bytes
SHA-256: 208d43b21b4768f34b6de30b754ce72e8b80803fec2c4f426d9c3c13c717e6db
font_01_sfnt_off000065ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 19196 bytes
SHA-256: d4de8ba3bb8760068d37a29e92514803f273f6f34b8f58488b1b99838233901d

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