Malicious PDF — malware analysis report

Static analysis result for SHA-256 518bc7a1e51118da…

MALICIOUS

PDF

33.7 KB Created: 2021-06-18 06:14:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5bccdf92ce5e71ec9dc468de3ebb111c SHA-1: 109c39825c8bcea6d86413f4ef7c59ce6950c467 SHA-256: 518bc7a1e51118daf23eb2b4003ae29b137c33ee63efa23ddd95522d1b3a8db4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to game-related cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure for users to click these links. The primary URL, http://netcdn.co/app/431946152/free-clothes-on-roblox-no-builders-club-game-hack, likely serves as a malicious download or redirect. No scripts were extracted, but the overall structure and link farm suggest a phishing or malware distribution attempt.

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.co/app/431946152/free-clothes-on-roblox-no-builders-club-game-hack
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-coin-master-game_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/5om-free-robux-bday_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-roblox-shirts-for-free_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/noclip-roblox-cheat-engine-2021_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-cool-hats-roblox_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-win-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/hack-the-streets-roblox_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-have-free-robux-with-site_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-vpn-for-minecraft_GM479516143.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-more-free-coins-on-coin-master_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-no-waiting-proof_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-robux-easy-to-get_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-without-surveys-or-offers_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-robux-book_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d67.bin
86afc8933fa989aace7e3ee4d0ac0ba4fcfe50dc23afd0702c07bd2e991a2ba8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D67 21856 bytes
font_01_sfnt_off00005da9.bin
05278471edcf0a9a3b98036555745840d32e6afe29e4bda480d46ba37f62f5f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA9 19352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.