Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a33a3982c709439…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 14:17:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b387e6c8120d48c69bf66a765bb8c712 SHA-1: 5899c844b1d792207c10966b2d79ec9a8647da75 SHA-256: 3a33a3982c709439d154db3c93be743c05ed1bafc98ae55ad8b745264d8c83b6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many of which appear to be part of a link farm designed to attract traffic. The document body mentions hacking and game-related terms, suggesting a lure for users interested in such topics. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs indicates a high likelihood of redirection to malicious content or exploit sites.

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/how-to-hack-on-roblox-saber-wars-alpha-game-hack
    • http://digilib.ulm.ac.id/pusat/repository/credit-card-hacked-from-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/get-free-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/microsoft-bing-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-site-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/blogger-coin-master-free-spins_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-do-you-get-free-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-sea-star-for-free-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-clothes-roblox_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/minecraft-windows-10-free-code_GM479516143.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-dino-sim-duplicate-hacks_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/cheats-for-roblox-deathrun_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-game-hack-link_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-link-iphone_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/daily-free-spins-coin-master_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/roblox-cheat-engine-scripts-2021_GM431946152.pdf
    • http://digilib.ulm.ac.id/pusat/repository/gameoffice-net-hack-coin-master_GM406889139.pdf
    • http://digilib.ulm.ac.id/pusat/repository/free-card-codes-generator-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003125.bin
40469be105de2ab990c81e7ad812168d5cb45f6db5b22a1281ab1523694dd222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3125 21960 bytes
font_01_sfnt_off000061a4.bin
ad7174fb3c4132e8e2fb85c1f9f1eb1ef645c236d8c85bf912ddd7d5171846a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 19360 bytes

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