Malicious PDF — malware analysis report

Static analysis result for SHA-256 4693a54aedbc37b9…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 14:19:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 004a8c4b3f622f40a80361d898db194c SHA-1: b37062bdededa72d66723e92088d0730bdf97b97 SHA-256: 4693a54aedbc37b963c4046cc8c1bdd31686a7fc0cd8427051294dd6aaf796d1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into clicking a link. The primary link, http://netcdn.co/app/431946152/comment-faire-pour-hacker-sur-prison-life-roblox-game-hack, redirects to a malicious website. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attempt, likely leading to further malware download or credential harvesting.

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.co/app/431946152/comment-faire-pour-hacker-sur-prison-life-roblox-game-hack PDF link annotation
    • https://nature-air.com.tw/upload/files/free-4now-info-roblox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/fe-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-apocalypse-rising-cheat-codes_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-hack-robux-online_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/speed-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • https://nature-air.com.tw/upload/files/coin-master-village-cost_GM406889139.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_off00003127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3127 22280 bytes
SHA-256: 7035def6203613cf13585c5ff9561d2b2a205d408fb69f8c39b62f5373846f6a
font_01_sfnt_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 19600 bytes
SHA-256: 315e6e19dfde45c954f58e875c91bed5f19e0631f631d491d1e4c0230ab83f5b