Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccd80c1a3facf18…

MALICIOUS

PDF

41.7 KB Created: 2021-05-13 09:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 01269df63055ff296cf05c8ce6215476 SHA-1: bb4352c395ff35aebe09eaabcf9d0d33ae9f64ce SHA-256: 6ccd80c1a3facf18a7b7d42f35544ca0c90234b39d261d44a9a1cf17cffe9cb9
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which are part of a link farm designed to attract users searching for game-related cheats or currency. The primary URL, https://netcdn.xyz/app/431946152/free-robux-exe-game-hack, suggests a download lure for potentially malicious executables. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-robux-exe-game-hack
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-free-robux-fast_GM431946152.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/roblox-gift-card-online-free_GM431946152.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/how-to-get-unlimited-robux_GM431946152.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/free-op-minecraft-servers_GM479516143.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/free-robux-images_GM431946152.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-link-today_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-here_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-free-spins-without-human-verification_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hack-2021_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/instagram-free-coin-master-spins_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-game-download-free_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-hacks-that-actually-work_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/minecraft-toolbox-premium-apk_GM479516143.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/free-coin-master-stuff_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/coin-master-cheats_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/best-free-roblox-outfits_GM431946152.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdf
    • https://pn-tapaktuan.go.id/pustaka/repository/daily-free-spin-coin-master-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a70.bin
ac5b84757065d3d3307dccf53e8ee27f5bfb1cf565b0c926e8bedc9e6c3d7ca1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A70 24064 bytes
font_01_sfnt_off00008158.bin
1e3fda203f08fe42ab00f6cef97e605bb68f7e374108f28afe3c353055d0c9d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8158 18012 bytes

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