Malicious PDF — malware analysis report

Static analysis result for SHA-256 04db191ee2461181…

MALICIOUS

PDF

33.7 KB Created: 2021-07-08 23:11:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5e196768f11823d4d90485da86aafa90 SHA-1: 713ca21efb11f693ef5f12a87c18f2af2c761785 SHA-256: 04db191ee2461181e5cb0bdc348853eb9c19b443116317b74d88ebabf73aca4b
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are SEO-optimized slugs pointing to game-related content like free Robux or Minecraft server hosting. The primary external URI, http://netcdn.tw/app/479516143/how-to-host-a-minecraft-server-for-free-game-hack, suggests a lure for potentially malicious downloads or phishing. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious link farm designed to redirect users to harmful content.

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/479516143/how-to-host-a-minecraft-server-for-free-game-hack
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/roblox-free-rubox_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/roblox-prison-life-v20-infinite-ammo-hack-2021_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/can-i-download-minecraft-for-free_GM479516143.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/how-to-get-free-roblox_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/500-free-coin-master-spins_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/how-to-get-free-robux-on-android_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/rbxoffers-earn-free-robux_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/coin-master-free-coins-link-2021-deutsch_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/minecraft-hack-download_GM479516143.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/how-to-hack-on-roblox-jail-breaker_GM431946152.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/coin-master-free-spins-instagram_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/free-tiktok-accounts-and-passwords_GM835599320.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/master-hack-coin_GM406889139.pdf
    • https://mansurabaya-elearning.usmart.id/__statics/gudangsoal/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030eb.bin
de72e3fcb8eb295a71621b2ca305c8fc991fe56b471dabef460bae0c0951e451		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30EB 21872 bytes
font_01_sfnt_off000060f6.bin
436412b7fb518003dd72d9755af4c5c221d015181f25d6fbbc5784d75a3c116b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F6 18276 bytes

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