Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8a00c4a5046d8d…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 09:24:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5db487e06aed051c8c2e51d25ed8dc7c SHA-1: 1213c96fe9de278a49589b14c1d5db75131bbc27 SHA-256: 5d8a00c4a5046d8d67c2760a893921e9702881dd4f93de2af810e0287d20e512
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly advertises 'Free Robux Hack Generator' and related game cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern is likely a phishing lure to drive users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/free-robux-hack-generator-game-hack PDF link annotation
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-restaurant-tycoon-money-hack_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/descargar-hack-roblox-funcional_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/free-shades-roblox_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-downgrade-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/hack-arsenal-roblox-2021_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-waterpark-noodle-for-free_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/hack-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/click-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://math.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-robux-without-human-verification_GM431946152.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_off000032c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C1 22748 bytes
SHA-256: cb85fd4671367a20145bf7ede3f9e81d7eb407c715dbe3c7b99093698368f0fe
font_01_sfnt_off00006583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6583 18992 bytes
SHA-256: b99d042f038cb0854217112ff22fa2c67a055dc81878343cfdd53606797f06ab

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