Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c6ba6735f3bac2…

MALICIOUS

PDF

35.3 KB Created: 2021-06-23 07:41:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 626190e9cb036772a30f92018f4c5386 SHA-1: 97514fb17d0b8afc4c6492206d62250e36e90868 SHA-256: 45c6ba6735f3bac202e7b21cc5ad7d87e7b9357561846454d86d4f5f10bda74d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a clear lure related to hacking games, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a download button heuristic further supports a malicious intent. No scripts were extracted, but the overall pattern suggests a phishing or scam attempt to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/how-to-hack-coin-master-using-es-filer-game-hack
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/rbxfree-com-free-robux_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/spin-hack-for-coin-master_GM406889139.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-free-download_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/get-free-tiktok-followers_GM835599320.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-rare-cards-for-coin-master-christmas_GM406889139.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/microsoft-rewards-roblox_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-now_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-root_GM406889139.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-life-hacks_GM479516143.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-make-free-robux_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-com-redeem_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/download-coin-master-hack-mod-apk_GM406889139.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-place-rewards_GM431946152.pdf
    • https://www.longford.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-bedrock-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000331e.bin
dac86206e30e4e00fdfd55fe1443a31a9c71e8995ebe0d9cf891028cb89b9b97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x331E 23040 bytes
font_01_sfnt_off0000669f.bin
9f5be4458162f88b8106d8459438f6a033b33521919b4f61ce35f018954fc42f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x669F 18592 bytes

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