Malicious PDF — malware analysis report

Static analysis result for SHA-256 79483cb7ef7ae40b…

MALICIOUS

PDF

33.0 KB Created: 2021-06-25 23:29:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e594a00995ddd072487a20632bca8686 SHA-1: d8d71f624fdaf728ccf374d152bdfdbd2ff03309 SHA-256: 79483cb7ef7ae40b293633a76c59afc62b3c1888c7e383a3263e0f807f906628
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 0.9824

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/free-robux-admin-codes-2021-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/hex-number-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-robux-2021-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-retail-tycoon-cheats_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/get-1-robux-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/da-hood-update-drum-gun-cheats-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/lvl7-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-shirts-suits-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-can-u-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-item-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-pin-codes-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/i-got-hacked-on-roblox_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_off00002a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A28 21916 bytes
SHA-256: 7d9e1dfbf94debdc46d6dd3086461dc79f26fb19ad07c983f4a3ef467919d3f6
font_01_sfnt_off00005a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A67 19672 bytes
SHA-256: ac2f41141f1b927ed3e68c03e6fdc77299adc42385d1a231b5b7caf683de645e

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