Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f200d73486bdfe8…

MALICIOUS

PDF

49.4 KB Created: 2021-04-29 22:03:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5fcd314a9d3f31175e3a792221fa6608 SHA-1: 74082335531d8d4227fc645cadacbe9e2d1d4d86 SHA-256: 0f200d73486bdfe8e0941b6fee236d16ddcb245de671b66e466a5fb9a9dbea41
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains heuristics indicating a browser installation lure and brand-impersonation credential phishing, specifically impersonating Microsoft. It directs users to a suspicious URL, 'https://netcdn.xyz/app/431946152/roblox-is-getting-hacked-game-hack', under the guise of offering a "Roblox" hack. The document body, though partially corrupted, contains references to "Roblox" and the same suspicious URL, reinforcing the phishing and malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 5

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/roblox-is-getting-hacked-game-hack.
  • 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-is-getting-hacked-game-hack PDF link annotation
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-earn-free-robux-easy.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/hack-de-robux-gratis.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-access-the-studio-of-a-roblox-game-hack.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/hack-roblox-vehicle-simulator-2021.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-bird-simulator-hack-script.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-back-accessories-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/free-trial-builders-club-on-roblox.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/roblox-free-body.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-hack-a-group-in-roblox-2021.pdfIn PDF document text
    • https://www.tiendagrouppln.com/ckfinder/userfiles/files/how-to-get-free-robux-otis.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4467 27440 bytes
SHA-256: 4d363c4a6bf9f1edc8d60ae2b4913f14988a94617246bf798076f70aa182702f
font_01_sfnt_off000082a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A7 11440 bytes
SHA-256: 154d59d1680f2d1e38ccb783d6997f344290d121007e51df331726de4128c12e
font_02_sfnt_off00009dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC7 18868 bytes
SHA-256: a3e62d7c8f45a2952db7412a15ae1cf5eebee5fcec0c8deb8251d92751b63590

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