Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bcc7814dcbd186a…

MALICIOUS

PDF

42.0 KB Created: 2021-04-28 20:18:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 75122b64ce1a6b870a9bee8c4019b6b6 SHA-1: 2691bd34f0e4dd501131e15ebd5cd8de313d9940 SHA-256: 3bcc7814dcbd186a68d8aa503c18faa4406471b343cb333ba32134c7f075a581
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/robux-hack-for-free-easy-no-dowland-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/free-printable-roblox-images.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-gift-catd-codes-list.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-grab-the-child-hacks.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-website-promo-codes.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/app-free-robux-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-one-piece-millenium-hack-devil-fruit.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/oblivion-hack-roblox-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-into-your-friends-roblox-account-with-robloxsecurity.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/pastbin-robux-hacks-for-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-hacks-mod-menu.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_off0000430e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x430E 27328 bytes
SHA-256: 1dbcba32b11aa85046f73503ed1241982f7f918c8eb1b31c3c864ac623cde845
font_01_sfnt_off00007fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD6 19172 bytes
SHA-256: ba38a68941d31cf4f292b8be52080e06b986d9aac4ddf00eb8c6c3333a33199e

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