Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0057dc14c035800…

MALICIOUS

PDF

56.8 KB Created: 2021-06-03 11:38:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3ddd851f61651ebd157febc25105721f SHA-1: 9dc80d4c55d5b6ee86b38090134ec10aed3c9faa SHA-256: b0057dc14c03580079a7165d79d834119634d366d30ff19c34fa6c6933ce16c6
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 0.9560

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 https://netcdn.online/app/431946152/how-to-speed-hack-roblox-2021-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/pubg-uc-qiwi_GM1330123889.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/tiktok-free-100-followers_GM835599320.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/spins-gratis-coin-master-hoy_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-shaders_GM479516143.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000578b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x578B 26176 bytes
SHA-256: d8cb06eb019de3a4181ab4f27ef3a1fcacb45c305e979d30eec7aec858a62584
font_01_sfnt_off00009561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9561 7420 bytes
SHA-256: fec45630155636527f0fb489e0967415db145d494034a881dd5c70f329062e9a
font_02_sfnt_off0000adca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADCA 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_03_sfnt_off0000b8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8DE 19100 bytes
SHA-256: 7ffd2c3980204b07056936a6e23d48bedbed792d6ced506cae1d3d474f175479

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