Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa0ce5ea8172bf1…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 22:37:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0dc74eae23b69f0c9efe6a431e910e7a SHA-1: 118a422d7b9acb742a533549edc06d7fd96ae07b SHA-256: 4aa0ce5ea8172bf1df727fbf19a1a9bc43bc980ea55b6ed68cb68c4d6a260fcd
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/survey-tools-s-sn76de2a7-0-free-robux-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/cheat-shower-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/games-on-roblox-that-promise-you-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-free-memverships_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-roblox-homestores_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/groups-with-free-stufff-droups-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.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_off000030e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E0 21896 bytes
SHA-256: d2e3e34a9b18af9fdc29947cc383b676737154389c88045888753160db52dc9d
font_01_sfnt_off000060fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 19780 bytes
SHA-256: 458d587b27263da3ea2e596a9a115e2afd23c30b67387d2bd1427685b1cc0aa2

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