Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0905dcd1845be6…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 12:30:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: eaaf706f3462d35affa6843e72bf2a43 SHA-1: 4f381eaae72f827f527240ce023b40c7d19d675c SHA-256: 5b0905dcd1845be60bad6c65053dcf24fb38a5eda2c9fa512843d181327fcbc6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux or game hacks, directing users to a suspicious URL. This indicates a phishing or scam attempt, likely to lead users to a malicious website for further exploitation or credential harvesting. The ML classifier also flagged this PDF as malicious with high confidence.

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/431946152/can-you-give-me-free-robux-game-hack PDF link annotation
    • http://www.perpustakaan.unda.ac.id//repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/cbro-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/caught-my-girlfriend-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/adidas-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-get-free-robux-from-games_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/pain-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/roblox-business-simulator-cheat_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-hack-2-step-verification-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/genewin-how-to-get-free-robux_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_off00003429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3429 22104 bytes
SHA-256: a50c39d5fe2bc823208757501672172f482cdd3732eaae6a090985c252677db7
font_01_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 19308 bytes
SHA-256: 213ffded7258ab8d7e86bc9b0b46cd506f05a04d5a82a378b686a68272e78f09

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