Malicious PDF — malware analysis report

Static analysis result for SHA-256 961d3f74902daf49…

MALICIOUS

PDF

34.0 KB Created: 2021-06-27 04:28:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cff6d979af705d41047207d590aeb482 SHA-1: 809cfe8abf3335c95a8db03b83a0ceb9777fbe31 SHA-256: 961d3f74902daf491b710753618d7de1326215cb2eb0fe33302b7ffd8ca0ebd6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and redirects to a suspicious URL, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious. Although no scripts were explicitly extracted, the presence of embedded URLs and the 'game hack' lure suggest the document is designed to trick users into downloading or executing further malicious content.

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.co/app/431946152/roblox-avatar-customize-free-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/hack-that-can-bypass-new-roblox-update_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-speed-hack-feb-4_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-cheat-cra-crusher_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/online-roblox-free-games_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/spin-coin_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-pet-simulator-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-counter-blox-cheats-crash_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-o-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-one-piece-roblox-character_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-roblox-followers_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/play-coin-master_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-noclip-in-roblox-jailbreak-no-hacks_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-400-spin-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_off00002e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E62 21764 bytes
SHA-256: 472b921f9728731a8ac8c6cfe2d5074a1c3e549a211dc0f6d0cc874c0e878bf7
font_01_sfnt_off00005e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E68 19472 bytes
SHA-256: 7ce19d3f8696a7c5e59d085ffe742be2607624fcfd1aaf7203fadcaa0ed8713c

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