Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bd2215a414f914…

MALICIOUS

PDF

43.8 KB Created: 2021-06-03 19:17:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 84f1e4d7c956e887b342099c7a71e101 SHA-1: a35b5f141443779c0a1ca0c0b5e698087a58b9dc SHA-256: 94bd2215a414f914c4c8f12de38125250ae1aad29b0ecd86e17ae58114c2d3e4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains a large number of external links, many of which appear to be part of an SEO link farm. The document body, though heavily obfuscated, contains references to 'Coin Master' and 'hack', suggesting a lure for game-related cheats. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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.online/app/406889139/coin-master-new-cards-hack-game-hack
    • https://digilib.stimlog.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdf
    • http://digilib.stimlog.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdf
    • http://digilib.stimlog.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/but-link-says-free-robux_GM431946152.pdf
    • https://digilib.stimlog.ac.id/repository/coin-master-free-coins-and-spins-today_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdf
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-tiktok-likes_GM835599320.pdf
    • http://digilib.stimlog.ac.id/repository/coin-master-hack-2021-without-verification_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/free-tiktok-video_GM835599320.pdf
    • http://digilib.stimlog.ac.id/repository/coin-master-codes_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • http://digilib.stimlog.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdf
    • https://digilib.stimlog.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/give-me-free-robux_GM431946152.pdf
    • https://digilib.stimlog.ac.id/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/free-robux-discord-servers_GM431946152.pdf
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-generator_GM431946152.pdf
    • http://digilib.stimlog.ac.id/repository/can-you-really-hack-coin-master_GM406889139.pdf
    • https://digilib.stimlog.ac.id/repository/coin-master-link-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050bb.bin
638b19adadf13cb5599e114d22e41281d85482d79a17d9b9f4235f066a1fcb87		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50BB 24556 bytes
font_01_sfnt_off000088fe.bin
b09614f462fc143d2396a5f3824a9304d12dedb8e61c452b065ffca1cc4d6821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88FE 18056 bytes

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