Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ba527ffb9c00270…

MALICIOUS

PDF

31.7 KB Created: 2021-07-19 03:51:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c83a5ce1044f40ce8f8792f49daf30e4 SHA-1: c5cd7dc95ad3d1b0e21017ae345b8785c282915f SHA-256: 2ba527ffb9c0027089df5dca736a388c79a2766e0b6f5c5a48ef87b07f845b02
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link pointing to a 'how-to-host-a-minecraft-server-for-free-game-hack' page. This lure, combined with a visual 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call-to-action, strongly suggests a social engineering attempt to trick the user into downloading a malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/479516143/how-to-host-a-minecraft-server-for-free-game-hack PDF link annotation
    • http://ghegamethu.vn/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://ghegamethu.vn/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://ghegamethu.vn/images/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://ghegamethu.vn/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://ghegamethu.vn/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://ghegamethu.vn/images/minecraft-windows-10-edition-free-download_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_off00002ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE2 21716 bytes
SHA-256: c10788eae888bcb474f850e8f0bf7ee7dd88601ff1c3683828fbe529b8089099
font_01_sfnt_off00005a95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A95 17988 bytes
SHA-256: 552c8aaf5f0bf5f0c44469b5bd19d93c548c2f36967da1a6f1157fed71bc8ec1

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