Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d76a75ad075fea…

MALICIOUS

PDF

35.1 KB Created: 2021-06-20 04:06:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 2039ac1c044475be842925b2a0dccbde SHA-1: 332532e7b49730c0704006dc9749be8d4be3832b SHA-256: 28d76a75ad075fea12250ad1c6dcde2205235e394335965765f671b377eb7735
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.co/app/431946152/roblox-dragon-ball-rage-hack-script-pastebin-2021-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/why-you-never-want-to-use-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/pubg-uc-to-inr_GM1330123889.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-roam-games-grand-blox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-login-page-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-free-robux-hack-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E1 21844 bytes
SHA-256: 7b7eb23cc518db7bc1513007b2b20ce4699d1cddb3287a3df1e27e9524598087
font_01_sfnt_off000061f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 19780 bytes
SHA-256: e8082ecfc7e5b13e7d8655ed2967701fdb8204fad4cf34e677c59aac32db140e

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