Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa94c7c7e2d2d4f4…

MALICIOUS

PDF

33.9 KB Created: 2021-06-17 23:23:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4b7a2b1fd01bb4d03b49d4dc0b4f53b7 SHA-1: aad073d6fdb06f4392442e21c2818e2cf93a9682 SHA-256: aa94c7c7e2d2d4f441a46b5abfd140988aa918f337344bbc876299f120dbc761
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are related to game cheats and hacks for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, suggesting a link farm designed to attract users with deceptive content. The ML classifier also flagged this PDF as malicious with high confidence. The document's content and structure strongly suggest it is part of a phishing or malware distribution campaign.

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/vidio-how-to-hack-in-roblox-game-hack
    • http://perpus.wdh.ac.id/repository/red-boy-cheat-roblox_GM431946152.pdf
    • http://perpus.wdh.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/this-obby-will-get-you-free-robux-without-password_GM431946152.pdf
    • http://perpus.wdh.ac.id//repository/how-to-get-free-premium-roblox_GM431946152.pdf
    • http://perpus.wdh.ac.id//repository/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://perpus.wdh.ac.id//repository/114-hacks_GM479516143.pdf
    • http://perpus.wdh.ac.id//repository/coin-master-tricks_GM406889139.pdf
    • http://perpus.wdh.ac.id//repository/free-roblox-gfx_GM431946152.pdf
    • http://perpus.wdh.ac.id/repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://perpus.wdh.ac.id//repository/coin-master-heaven-free-spins-link-2021-today_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/roblox-gang_GM431946152.pdf
    • http://perpus.wdh.ac.id/repository/how-to-hack-minecraft-pe_GM479516143.pdf
    • http://perpus.wdh.ac.id/repository/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • http://perpus.wdh.ac.id//repository/hack-master-coin_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/free-robux-hack-no-verification_GM431946152.pdf
    • http://perpus.wdh.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdf
    • http://perpus.wdh.ac.id/repository/roblox-free-games-without-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_off00002cf6.bin
399108dde2e5d121886a0f749ad2e23ac2588b4d13b35c6ea68e2d9da9728170		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF6 22324 bytes
font_01_sfnt_off00005e99.bin
51c702ec54b571ecda40d18a842ecb63372d5c6110b6648e56c36f88445efd42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E99 19248 bytes

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