Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eac7e7bcd5c6d1c…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 18:20:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d21a161cfe7d24ec4391c5a32a9d7cd1 SHA-1: 885e0e5bfaf4652d5217d03e138061301f2d5fb3 SHA-256: 5eac7e7bcd5c6d1cd4cccde1c7c1f74c944177cb5a7cfa6be411284e955f8c6f
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/claim-coin-master-free-spins-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/download-hack-roblox-pc_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/tiktok-free-apk-download_GM835599320.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/00-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-comlu-com_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-prison-life-v20-cheat_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-phantom-forces-hack-aimbot-redboy_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-account-of-30-days_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/bit-ly-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-shield-link_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_off0000321b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x321B 23280 bytes
SHA-256: afe38c238c24539ef43750569467356979e927725b2810c19f72e9551c6d5ab8
font_01_sfnt_off0000667b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667B 18508 bytes
SHA-256: 987175f1bef36cd1a6ae0c6c9abaf20945c3bf3d09c946a67552c00f8a973d90

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