Malicious PDF — malware analysis report

Static analysis result for SHA-256 4525a04a7341e4db…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 08:34:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4a15ab1a4f64eaa0aa34f3a4a537461b SHA-1: c7689ceb06a68324554197d3169f4e17e52cd38e SHA-256: 4525a04a7341e4dbcf454b2662900a2122699edcd68b399847513f25dc6a1913
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free followers, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or scam attempt. No scripts were extracted, but the document's structure and content point towards a social engineering attack.

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/835599320/what-tiktok-free-folowers-without-downloading-any-apps-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/youtube-hack-aimbot-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/a-game-givving-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-gold-cards-hack-english_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-roblox-items-google_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/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/assassin-roblox-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-running-gamepass-parkour-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-guuudinfo_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-builders-club-roblox-2021_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_off00002eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEA 21796 bytes
SHA-256: bb62240131199267582079457c172c81584938c6ae6f00eabebd6d081a9c4ef7
font_01_sfnt_off00005eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEB 19412 bytes
SHA-256: de1fca2c47180b7f5564d16caf5ce9ddda914574c4a456ec6b9ae80beedd3556

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