Malicious PDF — malware analysis report

Static analysis result for SHA-256 1983121f27bc2036…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 11:21:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 676f46be03261ee3c96eb9189b8ea77f SHA-1: 28e6dcc0a6361d5236fe1dcacdbc67fcc46edbbf SHA-256: 1983121f27bc2036a330446622da46fd083d22e9107c3a88e8efccb10e5bf016
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/is-there-a-possible-way-to-get-free-robux-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-on-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/which-group-has-free-admin-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/map-robux-free_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-generator-secret-hack-revealedfree-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/vip-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-gift-card-roblox-codes-2021-list_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/is-the-free-robux-video-real-from-vixter_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-promotion_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-use-someones-ip-on-roblox-to-hack_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/infinite-moneyz-roblox-injector-hack-pizza-place_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-and-no-human-verification_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_off00003016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3016 21688 bytes
SHA-256: 6f870410d5b2c816748d9f9dbb78ea5495486d7e76d0b404966d5d648dc80e11
font_01_sfnt_off00005feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEB 19712 bytes
SHA-256: 23ff1dbc1d1e934260d17a50af7c6aab99bfe7389d4b60f703bf35a5702127d2

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