Malicious PDF — malware analysis report

Static analysis result for SHA-256 52247ec19c7d261d…

MALICIOUS

PDF

42.8 KB Created: 2021-06-13 22:38:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a4f3351491c4a863631d1ef5d51f8e4b SHA-1: 70d3f56dd71a4fb5b1901062a18869f81beaa858 SHA-256: 52247ec19c7d261d282627e9d1f2a6895ca0780183f229b94d94ba679ebd8f9f
82 Risk Score

Malware Insights

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

The PDF contains an embedded URL and heuristics indicate a visual download button and password-protected archive lure. The ML classifier strongly flagged this PDF as malicious. The primary URL points to a resource likely intended for downloading a secondary payload, disguised as game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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
  • 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 http://netcdn.co/app/431946152/cheat-argent-roblox-vehicle-simulator-game-hack
    • http://library.fisip.upnvj.ac.id/repository/roblox-hack-ga_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/roblox-re_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdf
    • http://library.fisip.upnvj.ac.id/repository/jailbreak-free-admin-roblox_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/toolbox-for-mcpe_GM479516143.pdf
    • http://library.fisip.upnvj.ac.id/repository/free-robux-no-offers_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-printables_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/free-robux-hack-us_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/minecraft-bedrock-free-download-pc_GM479516143.pdf
    • http://library.fisip.upnvj.ac.id/repository/get-free-robux_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/coin-master-daily-spin-link-app_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/coin-spin_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/optifine-mcpe_GM479516143.pdf
    • http://library.fisip.upnvj.ac.id/repository/all-roblox-gamepass-free_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/free-robux-glitch_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-robux_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/roblox-dragon-adventures-cheat_GM431946152.pdf
    • http://library.fisip.upnvj.ac.id/repository/haktuts-coin-master-free-spin-today_GM406889139.pdf
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-cards-for-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_off000049e9.bin
6f176d64d380d23ac39329e3305eb7bd1e57c0218225ffba319be1f863b15807		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E9 25108 bytes
font_01_sfnt_off00008238.bin
1690ab8eddcbf19676a3337ff5c37d337d8ce74cadb3b098af2df245954f6e75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8238 19224 bytes

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