Malicious PDF — malware analysis report

Static analysis result for SHA-256 a19a5fd0d081eaa5…

MALICIOUS

PDF

35.4 KB Created: 2021-06-27 10:47:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fe439c59be171e689a42daf6c7c47fac SHA-1: ef28d3bf8054a7788293f42d3e6ede45ff9ea2ba SHA-256: a19a5fd0d081eaa52b08163802a2cd17733bd0f8a06c9b7aadbf393bc2e084af
82 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a document body that promises game hacks, indicating a lure to download malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the downloaded content may be password-protected to evade security measures. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-hack-roblox-using-xcode-game-hack
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-builders-club-free-2021_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/how-do-you-hack-roblox_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/pokemon-go-free-coins-generator_GM1094591345.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-tiradas-gratis_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/cool-roblox-costumes-free_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/minecraft-hacks-ps4_GM479516143.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/how-to-get-100-robux-for-free_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/pokemon-go-free-xp_GM1094591345.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/shark-bite-roblox-hack-script-pastebin_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/my-roblox-account-was-hacked-and-email-changed_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/bloxpink-free-robux_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/free-robux-just-enter-username-and-password_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/how-to-make-roblox-clothes-for-free_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-spins-whatsapp-link_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb//repository/free-coins-on-coin-master-generator_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/best-way-to-get-free-robux_GM431946152.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/google-coin-master-free-spins_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-spins_GM406889139.pdf
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-how-to-get-free-robux-in-seconds-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003374.bin
82c5497c5810df84d5ca1606aa1d1fb4ff65763b407154f5b65d947f343be400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3374 22304 bytes
font_01_sfnt_off00006508.bin
9e5b855ba718abb59dba820982f1df75cba306eb414993aed304e9991ab738c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6508 19112 bytes

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