Malicious PDF — malware analysis report

Static analysis result for SHA-256 d070c68cea488437…

MALICIOUS

PDF

46.4 KB Created: 2021-06-08 15:21:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c3bde5d96d49a9f423c6b36070b48239 SHA-1: 2a3b42a5237c516b82861252ebee2d576f79bed6 SHA-256: d070c68cea488437d0dda8177cb87377d15be3963f3d65badce29d410004015e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that point to websites offering free items or cheats for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces the deceptive nature of the document. The primary intent appears to be directing users to potentially malicious external sites via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/how-to-get-free-items-in-roblox-games-game-hack
    • http://manfeld.dk/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • http://manfeld.dk/images/roblox-gift-card-for-free_GM431946152.pdf
    • http://manfeld.dk/images/roblox-ninja-assassin-cheat-engine_GM431946152.pdf
    • http://manfeld.dk/images/will-minecraft-dungeons-be-free_GM479516143.pdf
    • http://manfeld.dk/images/minecraft-toys-for-free_GM479516143.pdf
    • http://manfeld.dk/images/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://manfeld.dk/images/facebook-coin-master-hack_GM406889139.pdf
    • http://manfeld.dk/images/no-human-verification-coin-master-hack_GM406889139.pdf
    • http://manfeld.dk/images/roblox36com-free-robux_GM431946152.pdf
    • http://manfeld.dk/images/coin-master-free-spin-group_GM406889139.pdf
    • http://manfeld.dk/images/roblox-hack-generator_GM431946152.pdf
    • http://manfeld.dk/images/robux-scam_GM431946152.pdf
    • http://manfeld.dk/images/hacker-minecraft-song_GM479516143.pdf
    • http://manfeld.dk/images/free-roblox-card_GM431946152.pdf
    • http://manfeld.dk/images/apps-to-get-free-robux_GM431946152.pdf
    • http://manfeld.dk/images/roblox-free-exploits_GM431946152.pdf
    • http://manfeld.dk/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdf
    • http://manfeld.dk/images/free-likes-and-followers-on-tiktok_GM835599320.pdf
    • http://manfeld.dk/images/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://manfeld.dk/images/coin-master-20-free-spins-link-today_GM406889139.pdf
    • https://discord
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050b7.bin
11af5eaec480be6bc41114895afaa9901531fc270dc0ee64e0428258eacb84ad		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B7 28332 bytes
font_01_sfnt_off000091c6.bin
96068811fa8ff032a2df003e46671d1d98bdca97e4731ed21b39f04f3a913ce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91C6 18704 bytes

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