Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd554adbb894ac6…

MALICIOUS

PDF

35.9 KB Created: 2021-05-23 12:05:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e5e75f2b7a295ff043fb05dceb19c363 SHA-1: f078c9574e5e9bf997b47573692b128088f14d2b SHA-256: 9bd554adbb894ac6c5c6bf41bf8feb22bb4a684f486eb776ef38b187a80ceb49
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is a lure for game hacks, specifically mentioning 'free Minecraft accounts'. It embeds multiple URLs that redirect to suspicious domains, likely for malware distribution or phishing. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/479516143/free-minecraft-accounts-2021-game-hack PDF link annotation
    • http://badboybiteaway.de/images/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/easy-way-to-get-free-robux_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_off0000338e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338E 24292 bytes
SHA-256: 29de9e9a003e61e6c89adeaf36f1f25113672bc939b24a441d7a8ffed1c80351
font_01_sfnt_off00006ae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE9 18252 bytes
SHA-256: a7a52ec6c2bb565f332a4905da6a686ee34bc05df98df468ad89fd298f001152

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