Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fe71a50641d429…

MALICIOUS

PDF

34.3 KB Created: 2021-06-20 08:02:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f287c0539f8f2d71bbcb86ed4f5e5f32 SHA-1: 2285073effe0733411c3bb4f7bd442b1b9d077f4 SHA-256: 22fe71a50641d42961ed621408ec79c681854c6efb149c2e33158457195d80ca
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent call-to-action related to free Robux, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a password archive lure suggests an attempt to bypass security controls. The primary malicious URL identified is http://netcdn.co/app/431946152/free-robux-for-no-money-game-hack.

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-for-no-money-game-hack
    • http://library.itekes-bali.ac.id/repository/free-robux-hack-2021-april-may_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-card-collection-hack-2021_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-roblox-clothes-no-decals_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-free-robox-dite_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/robux-free-online_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-hack-ga_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/mcpe-com_GM479516143.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-jailbreak-hacker-cage_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-ios_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/how-to-hack-roblox-life-in-paradisew_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-that-actually-works_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/haktuts-coin-master-spins_GM406889139.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-rewards_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/free-robux-no-email_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/roblox-bubble-gum-simulator-hack-script_GM431946152.pdf
    • http://library.itekes-bali.ac.id/repository/pubg-8-uc-buy_GM1330123889.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ed6.bin
5e9e8fa5ed220a3dc800911ca8b8f79697436768a2b7abb713a50b3230fbfcb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED6 22432 bytes
font_01_sfnt_off000060fb.bin
b4d6b86f6b35cf180a9a5b8ea4026442297e78af27a422a94688e7e519f2b4aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FB 19092 bytes

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