Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd40db99d508cba9…

MALICIOUS

PDF

48.2 KB Created: 2021-06-03 10:37:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7e106527413ef21e7c71608be02d9cd3 SHA-1: 22742f5606d3f9950257727d3b51fed81ece0026 SHA-256: dd40db99d508cba93fa71415c343366c3ba2fff445cc1c12f4ad3b16502748de
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free generators, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document structure and embedded links suggest a phishing or scam attempt.

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/431946152/how-to-change-your-username-on-roblox-for-free-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-8-14-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/clients-minecraft_GM479516143.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
font_00_sfnt_off00005128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5128 24836 bytes
SHA-256: 8fe7ab0755d5d15a2e10777c5d31b2c0048da20b65fe9e1baed7cb841ae46295
font_01_sfnt_off00008990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8990 3884 bytes
SHA-256: 64ea6bfd232c3abde76d8b86727203bfa3f935a5783cd0c1f642cf6d3fb42b29
font_02_sfnt_off00009637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9637 19540 bytes
SHA-256: 93794ea5a6c5acfa8b9ea336c7fa02a00f4c27ab4f9922f3137d25115e5793d6

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