Malicious PDF — malware analysis report

Static analysis result for SHA-256 2898539b9e32516a…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 00:50:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ed5a43571bbca2f1b7a18c96f90e5b2c SHA-1: dab8d548ecca4180e92992c5f7c9008f406f29eb SHA-256: 2898539b9e32516aafe630e059cdbcb2736a7681977622f588f450b638805dc1
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/406889139/coin-master-free-spin-and-coin-game-hack PDF link annotation
    • http://projectunionstreet.com/library/repository/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/tiktok-free-to-use_GM835599320.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/best-roblox-fps-unlocker-free_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-free-robux-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-967k_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-one-piece-ultimate-hack_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/robux-page_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/get-robux-today_GM431946152.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
stream_002_off0000305b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x305B 23232 bytes
SHA-256: 961a86fffdcbb377d8d095490e87f2975bdb53c0479fbcab76420f9479be75db
font_01_sfnt_off000064d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D9 18348 bytes
SHA-256: 3aa320ccb9cb7c087074e4ef079b33192d8e05703f275142029ef104db56ac85

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