Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc996e7508f56fdd…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 15:05:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 072e25e71ed13f9991ba100ba9dd2a3a SHA-1: cbb48e93e3c71f42874e4188c92cbe1715a40bab SHA-256: cc996e7508f56fdda678c51ec81a1c14e8b93e1db6075b6da90a870ad2d6c1f2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to the URL http://netcdn.co/app/431946152/how-to-get-free-robux-on-roblox-on-phone-game-hack. This URL and numerous others found within the document body and metadata strongly suggest a social engineering attack aimed at tricking users into visiting potentially malicious sites. The ML classifier also flagged this PDF as malicious.

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/how-to-get-free-robux-on-roblox-on-phone-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/redeem-gift-card-roblox-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/cheat-engine-cracked-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-scripts-prison-life-hacks-pastebin_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-gift-card-free-no-human-very-or-survey-youtube_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/lucky-patcher-roblox-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-person_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-noclip-hack-download-ro-boxing_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F98 22976 bytes
SHA-256: f85e3b53b45c4bf4deefbc2e74c3bb46db4ad2132305298365ba61cedb6ddc80
font_01_sfnt_off0000637d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 19376 bytes
SHA-256: 8aedb95f91e3b4b4cb9745480536d43cecac1b86d61eceaf6003a1c6605f55a4

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