Malicious PDF — malware analysis report

Static analysis result for SHA-256 6579c35322a7d68a…

MALICIOUS

PDF

39.9 KB Created: 2021-04-27 08:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0eddd4d09b06c9a0613ca584d3791884 SHA-1: a03b1a648582e231bba5fe187b4f5c66eb01d30a SHA-256: 6579c35322a7d68a8ffa2ec972fa12064dd15ee889ad7a2bb4634f00d8f44679
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 0.9941

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/roblox-those-who-remain-hack-script-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-hats-on-roblox-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hacks-para-infinity-anime-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-redeem-toy-codes-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/cheat-engine-roblox-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-hack-without-verification-or-survey.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-logo-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-doge-head-on-roblox-for-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/robux-free-logiciel.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/free-1-robux.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_off00003f7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F7D 24324 bytes
SHA-256: 035f8bcbc93a486a0dba1cb97bfcad8e6af8f78a0bc9ace7dc4c69c1071d04af
font_01_sfnt_off0000776e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776E 19208 bytes
SHA-256: 4bb61c6bd7850a963c97660b5b5f3c4822f5c41dec93495fff6c1250818c2186

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