Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a36adf66bfed8ec…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 03:32:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 2673f2ebc5b27c6c159378ae838551ba SHA-1: 8598730dc804e6aead0099aebdf7c2292284e70e SHA-256: 4a36adf66bfed8ec6892c35d210e489d5d10dfe82688751cbc5420ba0e6abfe5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document presents itself as a guide to hacking online game accounts, specifically mentioning Roblox. It contains embedded URLs and a heuristic firing for a password-protected archive lure, suggesting it's designed to trick users into downloading a malicious payload. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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-someones-roblox-password-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/cartoon-roblox-character-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/calliu-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-dragon-ball-z-rage-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hpyerinjector-roblox-hack-injector_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-hack-generator-app_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/downlaod-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-25-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-ad-youtube_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-badges_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-become-headless-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/150-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-secret-cheat-codes-for-music_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-weapons-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-com-free_GM479516143.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_off0000309e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309E 22384 bytes
SHA-256: f2d235ec7e3f91fca194199b9889f841fea4ea30ec82ee49c6f145694394ecd5
font_01_sfnt_off00006297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6297 19408 bytes
SHA-256: 34500999926e4cefb1c48e3943c063e5ee0c2699671562c444ce2301f4a52a0c

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