Malicious PDF — malware analysis report

Static analysis result for SHA-256 e379ea46a4cf4398…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 08:38:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7458086d043703f380e1d015e0ba372d SHA-1: a6d8001c6e2b4245ac6a1aec8d0bc2167fc14a75 SHA-256: e379ea46a4cf43985088a809d71a3e5cb3d20868dd87d494665eeb173de37c88
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 0.9971

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/406889139/50-free-spins-coin-master-links-game-hack PDF link annotation
    • http://perpustakaanlia.net/katalog/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/worst-client_GM479516143.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaanlia.net/katalog/repository/free-robux-codes_GM431946152.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_off00004b27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B27 24588 bytes
SHA-256: b6de01c19a1313ad6f9f3d365352143da080e9331532da42c895dbef79f98c40
font_01_sfnt_off0000831c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x831C 18364 bytes
SHA-256: 5f18526dee368ac18b20cf023ba1ff49340788242d54a3837ea53eed50d07245

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