Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fd0289e3e4a2df5…

MALICIOUS

PDF

36.9 KB Created: 2021-06-26 12:44:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dba0df69bd7934e9d283c2de94868f06 SHA-1: 2379ea396f16aa43dca4a6d39ed37098ed7a5bdc SHA-256: 5fd0289e3e4a2df58984de3efbfc6f4d34236bda0480aafd5d11d69b6bc7ee17
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that directly promote downloading a 'Roblox Generator' and 'cheats'. The presence of a download button lure and instructions for handling password-protected archives suggests a multi-stage attack. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it serving as a dropper for further malicious content.

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/roblox-generator-download-free-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-use-cheat-engine-on-roblox-swordburst-2_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/best-roblox-exploits-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-speed-hack-feb-10_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/y8-roblox-free-game_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/assassin-roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/name-that-youtuber-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-meep-city-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/body-building-roblox-weightlifting-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robuxtoday-2_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-do-you-get-hacks-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-guy_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/hackaron-roblox-password_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/box-get-free-robux-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/google-how-do-you-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-download_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-clothes-on-roblox-android_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-theme-park-tycoon-2-cheat-codes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3481 24100 bytes
SHA-256: a70c21f7659085cb1768bb6b0fc2e34fc3561c356b925a6a6cac243560f222c7
font_01_sfnt_off00006a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A94 19260 bytes
SHA-256: 898f6f621365a4d2694d399defaffd75b3a260734d9978fbbb45ed992fb9dbde

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