Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba67e389f74c5db…

MALICIOUS

PDF

49.2 KB Created: 2021-06-03 10:46:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 67111b04074c4cc79946e8c1361044e2 SHA-1: 22822e7f0d6ec8f1c26033fba58a5b829dc3873b SHA-256: 3ba67e389f74c5db68b0f811b1df42c328f543ec1433160f315316bce8488e63
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure related to 'free daily spins' and 'game hacks', strongly suggesting a phishing or scam attempt. The primary malicious URL identified is https://netcdn.online/app/406889139/free-daily-spins-coin-master-2021-game-hack, which is likely the destination for the malicious payload or further redirection. No scripts were extracted, but the document's structure and embedded URLs indicate a social engineering tactic to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-daily-spins-coin-master-2021-game-hack PDF link annotation
    • https://library.stikesmi.ac.id/repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/tiktok-free-gift_GM835599320.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/rbx-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-coins-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-coins-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-stuff-on-roblox_GM431946152.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_004_off000050c6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C6 24268 bytes
SHA-256: 01e6802ff1c12bed65a51de75189849f5fc5200c77d748746660879619894471
font_01_sfnt_off000087ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87EE 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_02_sfnt_off00009c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C79 18708 bytes
SHA-256: c65851a3c2ccf8ba249fbb480ab00bab2dc65c52c70fe6f18183c59a9b34b022

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