Malicious PDF — malware analysis report

Static analysis result for SHA-256 437ae2dceca136de…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 08:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1f905c5708ac1696341e95894d8a47ff SHA-1: 941e675b90859b6520918b75c025c971b799bedf SHA-256: 437ae2dceca136de019140f1f3495da98be95bcbcb4a0fde2cf8860694e46387
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are hosted on domains related to game hacks and cheats. The document body explicitly mentions 'how to get free Robux' and includes URLs that promise game exploits. This suggests a phishing or scam attempt designed to lure users to malicious sites, likely for credential harvesting or malware distribution.

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/how-to-get-free-robux-on-computer-game-hack
    • http://elibrary.smknesbu.sch.id/repository/coin-master-spin-hack-no-verification_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-shark-bite-teeth-hack_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/buy-free-clofing-on-roblox-computer_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/tre-un-hacker-sur-roblox-facilement_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-many-levels-in-coin-master_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-no-verification_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-roblox-card-pastebin_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/robux-hacker-beta_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-bloxburg-money-cheats_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/hack-coin-master-spin-apk_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hacks_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/comment-tlcharcher-un-cheat-sur-roblox-avec-explication_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-400_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-pet-food_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-free-robux-just-enter-username_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-jailbreak-hacks-2021-may_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/blackout-hack-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/descargar-fly-hack-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/cheat-codes-for-roblox-mad-paint-ball_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e13.bin
41c0949e073b23c02d81136f68bb0055435e94f4484fd0d0cd118ee174d9eb6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E13 22096 bytes
font_01_sfnt_off00005f10.bin
4eeda5a53974dafe6a6a7eb0474e8c00647b290d21ead3df531c01c0ce008c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F10 19420 bytes

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