Malicious PDF — malware analysis report

Static analysis result for SHA-256 2271334f5ff697d1…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 00:54:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fecf7a5f977e81e7220460d31ac23589 SHA-1: 2ab5a8cfb9e7b34c9caf0f04470b0f0d0957f0bb SHA-256: 2271334f5ff697d1e0a6f73df3e15a1c0c97049cada46d2129d5233d6f05a8c8
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 0.9980

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.co/app/431946152/roblox-how-to-get-free-robux-june-2021-game-hack PDF link annotation
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/how-to-get-your-hacked-roblox-account-back-without-email_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/car-sim-free-car-roblox_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.poltekkesgorontalo.ac.id/repository/minecraft-pe-free-download-android_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
font_00_sfnt_off00002f9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9B 22296 bytes
SHA-256: 6627e397b718cbb3dd5cfa3dcd38552b8d25cd6423ff15ac8e3a9e696b3ec760
font_01_sfnt_off00006147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 19624 bytes
SHA-256: a925647810d7a8a4db4e30616b640b9ec197d215b9dee5731d98d913fec7dc7b

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