Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48b2b9eb15ca2c2…

MALICIOUS

PDF

34.5 KB Created: 2021-06-28 04:14:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0663ab5be2bd048cb3dd36830686afd0 SHA-1: d28f0e6ebf322fe5b01f5449d807b1fc4eb84cc0 SHA-256: f48b2b9eb15ca2c2a24a5ccc49e8ee469e5e097e5726a6f22a58b6a9031a6f3d
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites offering free game currency and accounts. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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/free-roblox-accounts-2021-with-robux-game-hack
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
    • http://digilib-ppsunisma.ac.id/repository/facebook-coin-master_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-paintball-hack-download_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-by-playing-roblox_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/uncopylocked-free-robux_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/dupe-hack-roblox-booga-booga_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-spin-coin-master-iphone_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/robux-hacks-for-pc_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-mad-city-hack-script-pastebin_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/obby-games-on-roblox-free-online_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/80-free-spins-coin-master_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/robux-hack-kostenlos_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-the-best-cheat-engine-hack_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/roblox-unlimited-robux-hack-apk_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/collect-free-spin-linms-coin-master_GM406889139.pdf
    • http://digilib-ppsunisma.ac.id/repository/free-roblox-stat-changes-discord_GM431946152.pdf
    • http://digilib-ppsunisma.ac.id/repository/robux-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eaa.bin
dba574f7f2c71e3dda9c2c7ebe01da3283a7e6e8ea25d993b8c866aca5db9a5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAA 22068 bytes
font_01_sfnt_off00005f67.bin
a55470c357d6117f87c66cfcc5dd60461d5ad292bd735cfee1ec5bb843310ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F67 19780 bytes

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