Malicious PDF — malware analysis report

Static analysis result for SHA-256 511202b737972ec9…

MALICIOUS

PDF

35.1 KB Created: 2021-06-23 18:03:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8c6f6ceb187cc83413388b5a5f42a6a8 SHA-1: b8b9c4f85905ec283a478360d623b54bc6a61596 SHA-256: 511202b737972ec96811fac807ee605f1a4369e4af0b9419cebb9a1fe22d35f3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a prominent link to 'http://netcdn.co/app/431946152/free-roblox-clothes-girl-game-hack', suggesting it is a lure for downloading potentially unwanted or malicious applications. The presence of a machine learning classifier firing with high confidence further supports its malicious nature. Although no scripts were explicitly extracted, the document's structure and embedded URLs indicate a phishing or scam attempt.

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/431946152/free-roblox-clothes-girl-game-hack
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/claim-gg-free-robux_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-spins-on-coin-master-2021-ios_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/hack-coin-master-apk-2021_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-card-collection-link_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/carding-for-pubg-uc_GM1330123889.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/how-to-get-coin-master-card-free_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/get-free-robux-now_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/roblox-hack-tool_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-download-ios_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-hack_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/free-minecraft-windows-10-account_GM479516143.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/i-want-robux_GM431946152.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-tiktok-likes_GM835599320.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/real-coin-master-hacks_GM406889139.pdf
    • https://www.mtiwelding.co.uk/admin/ckfinder/userfiles/files/minecraft-apk-android-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_off000032fe.bin
0f0c05f3a4e2c2c2b5004829605773f1239800d3dad1fdab91c9ace57138d331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32FE 22116 bytes
font_01_sfnt_off00006436.bin
3cfa683e3a3f637295c6b7d990fcd00cc6f0dc6bb8e195ef764d5aa5452b5aa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6436 19040 bytes

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