Malicious PDF — malware analysis report

Static analysis result for SHA-256 291b4f488059cb5f…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 14:23:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 18c02b97ed450533c7b113fce5ae9231 SHA-1: 747838ae858f2917d4aac53a9038111820ca2245 SHA-256: 291b4f488059cb5fedc6ab4536d32ad3ec2c012ddd203159f150149e6a78335f
82 Risk Score

Malware Insights

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

The document presents itself as a tool for obtaining in-game currency for Roblox, a common lure for malicious downloads. It contains a heuristic firing for a clipboard command lure, indicating the user is prompted to paste commands into a shell. The embedded URL points to a potential download location for the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/roblox-hack-robux-download-tool-game-hack PDF link annotation
    • http://perpustakaan.pa-dompu.go.id/repository/free-promo-codes-roblox-june-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-espaol_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/xbox-roblox-free-john_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/tampermonkey-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-hack-xbox-one_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/roblox-hack-autohotkey-roblox-piano-player_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-to-get-free-stuff-on-roblox-on-phone_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/gladiator-now-we-are-free-roblox-song-id_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pa-dompu.go.id//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF5 22356 bytes
SHA-256: 345d1e17cf5e56670612148a9d7a752a9e4cfb9ec3554c1b8467ff6e7f7271c2
font_01_sfnt_off00005fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB8 19304 bytes
SHA-256: c62295c0a35ad69e7dfe3b3d782dfc5e301bb46801c089f313f6889586943499

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