Malicious PDF — malware analysis report

Static analysis result for SHA-256 74ca8e055a09395e…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 00:06:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0c80c67e0ab424e56c157148748db460 SHA-1: 08676fc848dd3359fb57f170ede84db51aa0c274 SHA-256: 74ca8e055a09395ed24b0cd0f3b4afb8e8be4ee0f8a90b0711c66c2c96655775
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to external websites, with a high-confidence heuristic identifying a 'free generator / game hack' lure. The document body also contains similar luring text and references to game hacks. These elements strongly suggest a social engineering tactic to redirect users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/free-minecraft-codes-2021-game-hack PDF link annotation
    • http://nebraskahospitalityhalloffame.com/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-cheats-pc-2021_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
stream_003_off00004b7b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7B 24856 bytes
SHA-256: 1ef903273eb4ee8f28b9d91dd90a860d01b6c31e7e40770ae8e33e34e4d66bea
font_01_sfnt_off0000835d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x835D 18288 bytes
SHA-256: c3cf5bb4a2b6206e2e9676afab3316ea2b1c646b143759ef858dff5c5e762465

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