Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2d05b815b76952…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 12:18:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f79e4f41b0b30ffadbc2ebda60f99e8d SHA-1: 2ca2b3f22deffd8b2e8d15677f5764fcd9927343 SHA-256: 2e2d05b815b7695253ef797eedef3501271cf23fa08f39895aed12018c86592d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'free Robux' and game hacks to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/websites-to-get-free-robux-game-hack, redirects to further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the observed redirection and lure tactics.

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.tw/app/431946152/websites-to-get-free-robux-game-hack PDF link annotation
    • http://hosoffices.com/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/ff-hack-roblox_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/mcpe-com_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/hack-work-on-roblox_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-potara-dragon-ball-rage-hack_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-hack-any-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000033ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AD 22004 bytes
SHA-256: eeee7a737dd8c7fbfdec5a8dc53453022689690939d5fb18e9721f799b331ed8
font_01_sfnt_off0000646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 19136 bytes
SHA-256: 1ff3ead325db6faa7b931a8562dea2485ede573d321a491f501e33267cef6888

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