Malicious PDF — malware analysis report

Static analysis result for SHA-256 450773bc511bbe2d…

MALICIOUS

PDF

31.6 KB Created: 2021-07-05 21:24:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ea78a6fb09802155887034dae70f759a SHA-1: b6d9b383bb7625948ad5740221ca398577fbd4d4 SHA-256: 450773bc511bbe2d087ffaf85b28ba5e3ac5de8d9303ae22a86c7c9ae4cc4411
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-no-download-hack-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/free-robux-without-downloading-anything-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-how-to-hack-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-free-no-surveys-or-password_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/youtube-how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hacks-robux-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-project-pokemon-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-bear-mask-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-hack-no-scam_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-for-robux-with-out-a-veafication_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_off00002ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC1 21724 bytes
SHA-256: 207df1b1440a403b217a422dc085067b24e802e1e95cca42942714f59ef03ca6
font_01_sfnt_off00005e91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E91 19160 bytes
SHA-256: 38656f57ea632c5ae9aff0990ef32f47b4b1b394188ef10efa33bf9d5ff74d0d

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