Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba72af94b97bd0ed…

MALICIOUS

PDF

35.0 KB Created: 2021-07-03 12:28:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fba06aefaf2953d7831f62191f161bb4 SHA-1: 38816d43dffbf48afa9422699734f760166709ab SHA-256: ba72af94b97bd0ed103695086eb098b87f36ec81c65e716c7bcef0229cf86d61
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/hacker-finder-roblox-id-game-hack PDF link annotation
    • http://library.stieyapan.ac.id/repository/hacks-para-el-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/block-best-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-fashion-frenzy-games-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-clothes-boy_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-rs-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-gift-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/earn-free-robux-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/robux-generator-com_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
font_00_sfnt_off000031e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E9 22356 bytes
SHA-256: 3f1d0c0dd7bcc6866f376d5f1a6d017015b483b69375ae58d53de1e86e03dd66
font_01_sfnt_off0000638c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x638C 19112 bytes
SHA-256: 8c55449b091ddaf9d9e4f6318db73ac71f163b92dde08543339c669e436596ab

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