Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb608d5bb8cc314f…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 09:27:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 54a886f4c4d14bfa73060592d5c9e417 SHA-1: b9f0607454ce849d53628da09de3fe2fc134f184 SHA-256: bb608d5bb8cc314f7acf923b8837d6e7bed256dcc98ae93d213d833478b642f6
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 0.9865

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/406889139/coin-master-free-spins-fb-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/master-free-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-rank-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-1_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/tiktok-free-followers-mod-apk_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-daily-spins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-cheats-and-hacks_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-win-10-free_GM479516143.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_off000050c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C4 25592 bytes
SHA-256: cd3f70a725fe21978edf4dcb23cdbd4cbe8607a53e6d2c5cca1b3703ca83f8de
font_01_sfnt_off00008a7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7B 18044 bytes
SHA-256: 0aee28c7ef374c5994b2d385534bd279b29819e2648a735201a60d453dfb84be

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