Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e78b1ed2649d714…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 10:59:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 92af679ae7190b088fb810242f320c47 SHA-1: deccf1d3bd0e168c2a3dcede10a17ae2559e737d SHA-256: 6e78b1ed2649d71433bc299a2fe69aaa3311e15e0da23dc612e0aa48c4e57347
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files related to game hacks and free in-game currency. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document body and extracted URLs strongly suggest a lure for free Robux or game exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-hacks-no-verification-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/venesix-roblox-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-wood-in-tradelands-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-lumber-tycoon-2-teleport-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/youtube-how-to-get-free-robux-on-roblox-jeff-tech_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/i-got-hacked-playing-roblox-in-real-life_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/cheats-for-elemental-battlegrounds-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-lumber-tycoon-2-hack-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/infinite-jump-wearedevs-roblox-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-gui-hack-script_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-accounts-with-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-become-admin-using-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-a-free-dominus-hat-in-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/easy-free-robux-website_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/cheat-on-roblox-ghost-simulattor_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_off0000330d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330D 22228 bytes
SHA-256: 7e1ab6fa53fb6495cdf8ed1b953e0eb9398cee206ccbc501b1c2fca93df6643c
font_01_sfnt_off0000646d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646D 19244 bytes
SHA-256: d7f6b7ff3c0ca36ad551dc1698c04b5b051d82f77f85620dffbaec3331a8b166

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