Malicious PDF — malware analysis report

Static analysis result for SHA-256 14487761ddf6e424…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 05:06:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7a890c4bbd1dd4f43c9aae98fde320b1 SHA-1: 1069288ba03ed79a4ae553afde34af17ce8bd2f6 SHA-256: 14487761ddf6e424d9b3af1fe1b9dbba6dcd92deb7ea379576ca5146bf3b09cc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a primary external URI, all pointing to websites offering game-related downloads or cheats. The heuristic firings indicate a link farm designed to attract users with deceptive content, likely leading to malware or unwanted software. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/minecraft-free-download-game-hack
    • http://e-library.stienobel-indonesia.ac.id/repository/free-roblox-gift-card-codes_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-daily-free-spins-hack_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/free-robux-youtube_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/get-free-spins-for-coin-master_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/windows-10-minecraft-free-with-java_GM479516143.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/free-spins-coin-master-links-twitter_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/free-robux-only-username_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-downgrade-minecraft-pe_GM479516143.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/how-to-get-free-roblox_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/earn-robux-today_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/where-to-get-free-robux_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/free-minecraft-client_GM479516143.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/claim-roblox_GM431946152.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdf
    • http://e-library.stienobel-indonesia.ac.id//repository/link-for-free-spins-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b46.bin
5140343876bf6fbec27a9ac39562f868aa913af08d7252889213c928f4e804b5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B46 24968 bytes
font_01_sfnt_off000083f0.bin
eff5919d985126b8591bb7cd3dea6a103dcf6f67049ada279646be2986fdbf31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F0 18292 bytes

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