Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6cf47603883b9b7…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 11:04:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c49ab2ee702be71abfc00df30b75b6d6 SHA-1: 3bcc5bd68bb247db22e7f50795c2a4469764ba47 SHA-256: c6cf47603883b9b7ecfbe16adc7319c550970acad80c7bb473d036cee3fafb55
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous embedded URLs and text referencing free Robux and game hacks, indicating a lure for users to download potentially malicious content. The presence of a 'password-protected archive' heuristic suggests a common tactic to bypass security filters. While no scripts were directly extracted, the overall structure and content strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-robux-2021-for-pc-game-hack
    • http://library.poltekkes-palangkaraya.ac.id/repository/coinmaster-free-spins-link_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-stuff-in-roblox-right-now_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-roblox-executor_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-gift-cards-2021_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-builders-club-on-roblox-2021_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-robux-hack-easy_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/2021-no-human-verification-hack-for-coin-master_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-username-and-password-roblox_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/blox-rewards_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/computer-robloxs-hacks-for-lumber-tycoon_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-use-the-blackout-hack-on-roblox_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-get-free-robux-no-joke-2021_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-cruise-ship-tyccon-albatros-free_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/wurst-112_GM479516143.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-robux-com_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/cheat-roblox-building-simulator_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/static-moonactive-net_GM406889139.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-jailbreak-noclip-hack-check-cashed-v3_GM431946152.pdf
    • http://library.poltekkes-palangkaraya.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdf
    • http://library.poltekkes-palangkaraya.ac.id//repository/apps-that-give-you-free-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_off0000313b.bin
e1efe9d9883f8a56bdb583c546674d3eb4d646cac16264f8f317f5926d580a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x313B 22248 bytes
font_01_sfnt_off000062aa.bin
76d65d5fe5e08aa7e1c3783895363f59a24a15699196a3f4acc3b35873c825dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 19272 bytes

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