Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dae127b39b77ff5…

MALICIOUS

PDF

28.6 KB Created: 2021-05-10 19:13:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ca6837d179d638e4615bf68b726c7f51 SHA-1: cf3a2223283aa69ee81c364074488ef37709b2d1 SHA-256: 8dae127b39b77ff5cfda7e915b05d370a9f6efb080583fb8a6782357242524a2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent link to 'https://netcdn.xyz/app/431946152/free-robux-no-verification-needed-game-hack', which is flagged as a 'free generator / game hack' redirector. The document body also contains text and links related to 'Free Robux' and game hacks, indicating a social engineering lure. While no scripts were explicitly extracted, the presence of numerous malicious URLs and the nature of the lure suggest the document is designed to redirect users to potentially malicious sites for scams or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9774

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/free-robux-no-verification-needed-game-hack PDF link annotation
    • http://origamiperu.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://origamiperu.com/images/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://origamiperu.com/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/what-is-robux_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/rbx-website_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://origamiperu.com/images/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://origamiperu.com/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://origamiperu.com/images/free-robux-no-verification-at-all_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_off00002041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2041 20228 bytes
SHA-256: d1c67dca231257b17b38b5898d399814c63ffddae2402d0b86c123cd79bdbe30
font_01_sfnt_off00004b69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B69 18776 bytes
SHA-256: d142001b9e8124b93d34dd5eb493ac1502906b177ba9fa7077e4038994baf40d

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