Malicious PDF — malware analysis report

Static analysis result for SHA-256 9645e9aa1fcf04a0…

MALICIOUS

PDF

32.6 KB Created: 2021-06-27 07:09:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a3f6b8d46b542f289c276fc95a65ee1a SHA-1: a3b993da8bafaeaf62edbd19afd0da7e6555111d SHA-256: 9645e9aa1fcf04a0d53e3166b5c3e6206d7d8ea0809b14f8147649c75d9b33ef
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous URLs related to game cheats and free in-game currency, indicating a lure for users to download potentially malicious archives. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' confirms this, suggesting the document's purpose is to trick users into downloading a password-protected payload. While no scripts were directly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards a malicious intent, likely to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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
  • 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-real-working-2021-game-hack
    • http://library.apsidoarjo.ac.id/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/free-robux-obby-no-password-link_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-cheat-wearedevs-sourcecode_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/coins-master-hacks_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdf
    • http://library.apsidoarjo.ac.id//repository/real-robux-codes_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/tiktok-followers-for-free_GM835599320.pdf
    • http://library.apsidoarjo.ac.id/repository/coin-master-daily-free-spin-and-coin_GM406889139.pdf
    • http://library.apsidoarjo.ac.id//repository/legit-free-spins-coin-master_GM406889139.pdf
    • http://library.apsidoarjo.ac.id/repository/roblox-hacks-and-cheats_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/rape-simulator_GM431946152.pdf
    • http://library.apsidoarjo.ac.id//repository/free-robux-without-human-verification-2021_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/minecraft-free-minecoins_GM479516143.pdf
    • http://library.apsidoarjo.ac.id/repository/free-robux-youtubbe_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/free-buying-roblox-pastebin_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://library.apsidoarjo.ac.id//repository/minecraft-java-free-trial_GM479516143.pdf
    • http://library.apsidoarjo.ac.id/repository/destruction-simulator-roblox-hack_GM431946152.pdf
    • http://library.apsidoarjo.ac.id/repository/free-robux-no-human-verify_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec5.bin
ba8e74c4f7cbb6151f0a85312b0930c42dbd28f6f7e3300f5c42309e8f25a434		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC5 22432 bytes
font_01_sfnt_off0000606a.bin
76267559f3eab766263e25e467467fd28f13b8ced525d4f4ea246896f115941d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606A 19680 bytes

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