Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb35d800a6d30a5…

MALICIOUS

PDF

42.6 KB Created: 2021-05-19 02:00:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5d5d3d27aa4976aecc55f52ab01117cf SHA-1: 4e8039439ce8c9419fade93893c0016678041cfd SHA-256: 8fb35d800a6d30a5176e6e528b6cfe4db1e44d7ed059aac5e9f6260cca322cad
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF links related to game hacking and free in-game currency. The presence of a download button lure and a high ML classifier score further indicate malicious intent. The document likely serves as a lure to drive users to malicious sites or download further malware.

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/835599320/tiktok-free-now-game-hack
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-to-hack-roblox-games_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/is-coin-master-hacks-safe_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/coin-master-hack-apk-with-fb-login_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/but-link-says-free-robux_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/roblox-executor-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/20-free-spin-link-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/coin-master-official-fan-page_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/how-to-get-free-spins-coin-master_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/robux-generator-no-survey_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/coin-master-free-coins-and-spins-hack_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/coin-master-link-today_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/free-spins-coin-master-2021-app_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/minecraft-images-free_GM479516143.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-coin-master-game_GM406889139.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan/repository/robux-com-free_GM431946152.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://labfisika.undiksha.ac.id/perpustakaan//repository/robux-redeem_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e11.bin
3b4777a99dcd659d941b0814a3873d7f306959bb8cd059e3e5a0289a20d23bfd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E11 24548 bytes
font_01_sfnt_off00008652.bin
89e24f9b96e904a9ed02a3290d84bfff53d850b7e085017dbe6eff70f451f4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8652 17620 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.