Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d1c55ab586cdd2a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 17:23:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 07bbf88204c84c809c797c6a84228b68 SHA-1: c90cb4051f2cb9a9dc8e2ad4d8c51ed58f96df04 SHA-256: 6d1c55ab586cdd2ae3706d18988caeffa3734675ac6a423cc6408060ac20835e
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are structured as SEO-optimized links to pages offering game cheats and hacks. The presence of a 'Download Button' heuristic and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further malicious content. The document's content and heuristics strongly suggest a phishing or malware distribution scheme.

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/fidget-knot-free-robux-game-hack
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/store-empire-beta-cheats-roblox_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/robux-cheap-cheat_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-spin-link-hack_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/free-robux-hurry_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-hack-xyz-download-free_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-hack-app-ios_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-las-vegas-money-hack_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/i-got-hacked-on-roblox_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-ftw_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id//repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-daily-spin-free_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/how-tto-get-free-robux_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/ultimate-free-robux-generator_GM431946152.pdf
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-free-spins-coins_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id//repository/minecraft-hacks-18-9_GM479516143.pdf
    • http://pustakafpsi.uin-suska.ac.id//repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/coin-master-rewards-2021_GM406889139.pdf
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-robux-hacks-2021-no-survey-no-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f84.bin
0e86999a1fe637b5af38e1bc7b1a428cbe726c578f42f052bc99ef9d59c4dfa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F84 22600 bytes
font_01_sfnt_off000061cf.bin
7e51cb585db49a3f467c9ddec5017e22cb37d2ded53592a8cf996519fbaa72c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 19112 bytes

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