Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee232de21a75148…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 21:10:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6c69755316287c0a26393bb573e533bc SHA-1: b6c441c0c02f7b9358ffa75c971a3ad5cf676823 SHA-256: bee232de21a7514849dc1318caaa4e1d9250789cb2f3a04e1bc9f8241a17a895
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.tw/app/431946152/roblox-robux-hack-game-hack PDF link annotation
    • http://librarystkippgribl.com//repository/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/tiktok-free-dance_GM835599320.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-dump-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-hack-android-no-root_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-and-spin-link_GM406889139.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
font_00_sfnt_off00002f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4E 22652 bytes
SHA-256: 44ad95e53bac47de0b74e1f9b1d52b7b5f0d109d06442f79678a2a95e03fdf21
font_01_sfnt_off000061b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B4 18796 bytes
SHA-256: ac85a7f36e8d2c6b778aa8e0527eba638abc788d16e2325ecdb460050b0ba6ed

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