Malicious PDF — malware analysis report

Static analysis result for SHA-256 700c73cf64efe5eb…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 22:33:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b4beac5743e49c85039507cde8a6a92 SHA-1: 164931395188ee0d84ad5a16f55311cb7532708b SHA-256: 700c73cf64efe5ebf128a05a376acb3693460ed537c57bea2ae2acf541c343d4
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 0.9871

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/roblox-games-that-give-you-free-robux-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-spin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/what-tiktok-free-folowers-without-downloading-any-apps_GM835599320.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-vip-roblox_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
stream_004_off00005602.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5602 29172 bytes
SHA-256: 85edb01ea74b04179b7b5b2393343ebbca56df834bffd0d403b403d468095689
font_01_sfnt_off000099e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99E8 19240 bytes
SHA-256: af18d9cb6acc741702b59c78a5d378fdddaa2c6ad6fac2421576a1d1ac5dc213

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