Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b7e8f28db78228a…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 08:40:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0a681142abbeeee38ee0a22b27cc6474 SHA-1: 92a0a0832cc0969b20004b29914dcdb982346ae1 SHA-256: 6b7e8f28db78228aedad1089083f30642aace0e25206c04efc661cc50ef06ba7
82 Risk Score

Malware Insights

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

The document contains a prominent link to a Minecraft hacked client, suggesting a social engineering lure to trick users into downloading potentially malicious software. The 'ClickFix' heuristic indicates the document may also instruct users to execute commands directly, further supporting a malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 https://netcdn.online/app/479516143/best-free-minecraft-hacked-client-game-hack
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/roblox-free-robux-no-survey-no-save-no-subscription_GM431946152.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/robux-generator-without-human-verification-2021_GM431946152.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/flip-master-coins-hack_GM406889139.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-account-roblox-with-robux_GM431946152.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/hack-download_GM431946152.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-robux-sites-that-work_GM431946152.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/minecraft-free-online_GM479516143.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-bedrock-minecraft_GM479516143.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-game-free-spin-download_GM406889139.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/moonactive-free-spins-coin-master_GM406889139.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/what-do-roblox-points-do_GM431946152.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/roblox-builders-club-free_GM431946152.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-email_GM431946152.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdf
    • http://sman1negara.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • https://sman1negara.sch.id/new/public/ckfinder/userfiles/files/coin-master-cards-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054fb.bin
59fcfa7cf2981eea0352c05869c5d4040a7e04277f5cb9347b0cdc771e2e0731		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54FB 23908 bytes
font_01_sfnt_off00008ae9.bin
dee6b3909f49c7ddbb1ab18ee008f1775ca59041fcbdd753e186a80ce5ffdd4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE9 18200 bytes

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