Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b0389885b50b23…

MALICIOUS

PDF

33.3 KB Created: 2021-07-19 16:26:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 58447eea1a9c5af9d8c0d0ddc7d57e01 SHA-1: 781d0583a7b8e19036cc6d1ef7ef1dba36892fa6 SHA-256: e8b0389885b50b23689aebd0ff1c748af60638efd892accd1a299fd175b5ee6b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for a "free Robux generator" and "game hack", directing users to the URL http://netcdn.tw/app/431946152/free-robux-giveaway-game-hack. The document body also contains numerous other links to similar scam-related content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt, likely leading to a malicious download or further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-giveaway-game-hack PDF link annotation
    • http://www.nelsonssales.com/media/storage/editor/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.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_off00002ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA4 22636 bytes
SHA-256: 6a80c276b82ddc7df217a19bfeb567b843af3477be3be440791ecfa736876a85
font_01_sfnt_off00005dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAD 19004 bytes
SHA-256: 53c681b56d2aeec96b089841d9ffc48036577cfa01866e40d4f9479265023228

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