Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf28939535716daf…

MALICIOUS

PDF

35.5 KB Created: 2021-06-30 15:25:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a3b3946fb71683eab92fd6da8c698f35 SHA-1: 70367a4d9fe3f99138f2e6ff31736598fa37d60d SHA-256: bf28939535716daf4c69eed082d527e27a3189b3697b36f7fff98801412be136
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF document contains a large number of links to external websites, many of which are SEO-optimized and appear to be designed to lure users into downloading files related to game hacks and cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links suggests an attempt to redirect users to malicious content or downloaders. The document body itself contains references to game hacks and a URL, reinforcing the lure.

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/lapeceratonta-roblox-tycoon-hacked-game-hack
    • http://digilib.iailm.ac.id/repository/infinity-rpg-hack-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/www-coin-master-hack-tk_GM406889139.pdf
    • http://digilib.iailm.ac.id//repository/coin-master-free-shield-link_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/best-game-to-hack-in-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-to-get-emitted-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/roblox-2021-hack_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/free-gold-cards-for-coin-master_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/free-math-games-online-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/google-coin-master-free-spins_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/hack-my-spins-coin-master_GM406889139.pdf
    • http://digilib.iailm.ac.id/repository/how-to-hack-your-friends-account-on-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/how-to-download-a-roblox-jail-break-hack_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/how-do-you-hack-other-players-account-on-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/how-to-become-an-admin-on-roblox-for-free_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/hack-avatar_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/roblox-struid-battle-royale-aimbot-hack-full-lua_GM431946152.pdf
    • http://digilib.iailm.ac.id/repository/minecraft-free-demo_GM479516143.pdf
    • http://digilib.iailm.ac.id/repository/how-to-get-free-vip-in-roblox_GM431946152.pdf
    • http://digilib.iailm.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032f3.bin
b89b49d5d7d9e082e6c0a8e86df665a0511da7ce4fc64608d176caa141eecc0b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32F3 22384 bytes
font_01_sfnt_off000064de.bin
e69e6b5de5f2256d98aa3e37b4b4f36caebd1757f3e56f905e2715f287fba21e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 19292 bytes

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