Malicious PDF — malware analysis report

Static analysis result for SHA-256 256cf62f7319852d…

MALICIOUS

PDF

42.8 KB Created: 2021-04-28 07:16:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: da8727e125ddbd8a66e94fb37f39354b SHA-1: 90141e77fcbcec8fe4300608fa00148ad5c2bb04 SHA-256: 256cf62f7319852d3d20050c6f3b17d6ef8eef28364f210f93f97f011655430b
82 Risk Score

Malware Insights

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

The PDF contains embedded URLs and a document body that attempts to lure the user into downloading a file by promising Roblox cheats. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the downloaded content may be an encrypted archive, further indicating a malicious payload delivery. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/bear-cheats-roblox-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/free-robux-november.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/cheat-files-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-obby-gives-you-free-robux-july-no-password-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-free-clothes-hack-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/creeper-roblox-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-deadzone-hacks.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/does-getting-1-million-robux-for-free-work.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-robux-on-roblox-ipad-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/redeem-promo-codes-for-free-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-robux-urban420-network.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
font_00_sfnt_off00004355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4355 29608 bytes
SHA-256: 8bb62eb0c3e6efe7f47fa6686c9249e19cf37ac656b52ad92d00a489b6bb6082
font_01_sfnt_off000085c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C4 18280 bytes
SHA-256: bebaf7f03c68877d38379b623281da7d3903044c161eb8271d86f782b4ba3678

Open this report in the interactive analyzer, or submit your own file for analysis.