Malicious PDF — malware analysis report

Static analysis result for SHA-256 90b71f3027a0570b…

MALICIOUS

PDF

33.9 KB Created: 2021-06-27 22:40:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a16aa04687b30dd094f7c393304bf75d SHA-1: 179e9550b72908d92d745665ac138d27e6e74e6f SHA-256: 90b71f3027a0570bed74f25ba971104ce4bfc6a1172fb20d34569057056fdf9b
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.co/app/431946152/hack-r-roblox-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/unpatched-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/safe-mac-roblox-auto-clicker-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-for-mobile-24-com-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/quick-robux-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-mafia-cloth-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-hack-2021-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE4 22192 bytes
SHA-256: 43f2305e3c971e8813c316c9bc23930d3419e884908847fbbd049c40a1ca1b1e
font_01_sfnt_off00006043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 18656 bytes
SHA-256: 3f24dfaf232391c18f95595c77c693997dd8bbe7e69db50b12e3625d96604750

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