Malicious PDF — malware analysis report

Static analysis result for SHA-256 f177b9bb401d5770…

MALICIOUS

PDF

42.5 KB Created: 2021-06-13 23:24:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64ba778e75c03cde4e090df810aa2903 SHA-1: 822e2e680250ee03748000f6f5becde2b50e678b SHA-256: f177b9bb401d577009aac3890bc9260170e74e4adbd1d4aba1dbb1eef5c1b7a8
82 Risk Score

Malware Insights

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

The PDF document contains a lure for downloading a file, as indicated by the 'SE_DOWNLOAD_BUTTON' heuristic and the embedded URL. Furthermore, the 'SE_CLIPBOARD_COMMAND_LURE' heuristic suggests the document instructs the user to execute commands, likely to download and run a second-stage payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/how-to-be-a-hacker-on-roblox-on-ipad-game-hack
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-hack-generator-club-2021_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-for-free_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-gameplay_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-hack-spin-generator_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-free-robux-codes_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/get-free-robux-today_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/no-scam-free-robux_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-hack-us_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-hack-xyz_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/free-robux-glitch-2021_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-free-robux-adder_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-robux-2021-on-a-chromebook_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/get-tiktok-followers-free_GM835599320.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/minecraft-free-apk-download-016-0_GM479516143.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-email-free-spins_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-hacked-database_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/coin-master-free-spins-and-coins-app-download_GM406889139.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/roblox-free-exploits_GM431946152.pdf
    • https://stmik-kharisma.ac.id/perpustakaan/repository/how-to-get-free-robux-and-builders-club-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ac1.bin
156f61259e02a1d80123ac36eeb317f7b521a5eab2a8b9db1952212290dde5e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC1 24536 bytes
font_01_sfnt_off00008269.bin
115f99f0bea8ea9a41ba2db36b0a5cafd8259636ac566652beabbc0848a02342		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8269 18696 bytes

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