Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6fc50d1efa2d1f…

MALICIOUS

PDF

42.0 KB Created: 2021-04-27 05:04:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 873b1f5b9f90d87b271f36100e125248 SHA-1: 8fa242443d653284ec9d1b01da50f5a8294b6a00 SHA-256: 0d6fc50d1efa2d1f3aa10833f7869c53cecb9225d2002b62b34fba1494cd8da8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to Roblox game hacks, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a malicious site for potential malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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.xyz/app/431946152/how-to-get-a-private-server-in-roblox-for-free-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/assassin-roblox-hacked-uncopylocked.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/moon-tycoon-roblox-gives-free-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-into-files-to-get-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/egg-hacker-2021-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-tool-for-roblox-pc.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-roblox-2021-youtube.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-roblox-vehicle-simulator-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-roblox-toy-redemption-codes.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-snowman-package-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-free-logiciel.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_003_off00004638.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4638 26372 bytes
SHA-256: 3b9cb6879d9b4b6e2f5ece007fd7820d9b39adcaa41609e418325b4c3e8f4344
font_01_sfnt_off000080af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AF 18832 bytes
SHA-256: 086e2a846a23635f3c252db457fc11104efa00e0cde0c76050ea21c8c7aac063

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