Malicious PDF — malware analysis report

Static analysis result for SHA-256 052e925f77ec510b…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 05:29:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b5614d9ba39e7bced484a952ae380055 SHA-1: dbde5781eee75e25f487962bc7dcd52f524636f7 SHA-256: 052e925f77ec510b02d12f6551a997781dbfd25f7e849f47a54ebf3afe0e42bc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game cheats and hacks for popular games like Roblox and Coin Master. The presence of a "download button" lure and a high ML classifier score indicates malicious intent. The document likely serves as a lure to drive users to these external sites, which could lead to credential harvesting or the download of further malicious payloads.

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.tw/app/406889139/coin-master-free-redeem-code-game-hack
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/can-you-make-free-shirts-on-roblox_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/free-codes-generaator-roblox-no-fake-no-verication-human_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-free-radio-roblox_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/roblox-the-plaza-money-hack_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/how-do-you-get-free-food-on-coin-master_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/robloxmatchcom-free-robux_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-free-robux-with-nopde_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-hack-roblox-jailbreak-free-vip-server_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/minecraft-iphone-free_GM479516143.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-free-robux-inspect-2021_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/coin-master-daily-spin-link_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/robux-generator-without-verification_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-free-robux-for-free_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/blogspot-coin-master_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/roblox-play-as-guest-free_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/coin-master-hacks-free-spins_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/coin-master-apk-mod-hack-download_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/free-codes-giftcards-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cb.bin
fd9fd03e0a8362dc3402381c62dfec8a8ea63b09a879fbca945a8f0f5cf5a257		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30CB 22736 bytes
font_01_sfnt_off000063d4.bin
5dea6828f10c6d475ac08eedb2a46cdce9e4f7fa2af90066785ff5216698df8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D4 18432 bytes

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