Malicious PDF — malware analysis report

Static analysis result for SHA-256 52a7f33ec48e89ef…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 19:35:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 43c33ba1e71a005239edf61300832358 SHA-1: ea744a0d4a6f31bb0e98c96ea0662bf070952da7 SHA-256: 52a7f33ec48e89ef45045981f13deb100e9f5afe1014fe38b9c0c6635459b2cb
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/free-robux-group-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/free-robux-kindly-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-a-free-golden-boombox-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/hack-para-phantom-forces-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-meme-stshirt-free_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/all-free-to-wear-clothes-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/epic-minigames-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/kazok-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-hack-people-on-roblox-without-downloads_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/como-hackear-el-juego-coin-master-en-espaol_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_off00002e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2D 22516 bytes
SHA-256: c8cc77001912e7cecbe077fbbdfc85565ba7ef934ca66ace7805a258c1d69c61
font_01_sfnt_off0000601f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 18892 bytes
SHA-256: 67507f51078b9d360364fd80bede771b0831b8cadce387b59c9348d966d9fcb5

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