Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0620bd0db8a0335…

MALICIOUS

PDF

48.4 KB Created: 2021-06-11 03:39:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0b4c0e1a828d1fb5ade528a9a7f7978c SHA-1: 460e69439b25777f361ddf97ba92265963e2195d SHA-256: d0620bd0db8a03357deebe4b8385847c9c1707fd2d75b99a547344c93473dd22
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and heuristics indicate it is a lure for downloading a malicious file, disguised as a game hack. The ML classifier strongly flagged this PDF as malicious, and the presence of a visual download button and payment redirection lure further supports a malicious intent to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.tw/app/431946152/roblox-free-rade-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-redeem-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/100-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-2021-november-hacked_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/can-you-get-roblox-on-xbox-360-for-free_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/pubg-uc-key_GM1330123889.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/is-roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005117.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5117 27832 bytes
SHA-256: 553aaee8427191542db60cbfdd5b398e61a488b65ec3682e1228db5f249a1ec9
font_01_sfnt_off00009085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9085 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00009a47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A47 18348 bytes
SHA-256: ee1874d39bcabdd58ad89e11619979600695af008345946efd85fe02d79cbf68

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