Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0eb217513398700…

MALICIOUS

PDF

35.5 KB Created: 2021-07-20 09:12:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: aaeefe73321bb663553452ef8db153a7 SHA-1: aaaba03d5fb3e3af45559732efeaabb78c40d44a SHA-256: a0eb21751339870048a20d6b7aba019d6a38bf435a50e7966f4e73a0057e108d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

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/406889139/coin-master-hack-without-verification-game-hack PDF link annotation
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://www.rigor.co.mz/uploaded_files/userfiles/files/free-tiktok-followers-app_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_off000032f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F3 23664 bytes
SHA-256: cef8f95f0499beaf6c41fd7df00660db901f89a6c9a02948f076b04bc26c64b5
font_01_sfnt_off000068b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B5 18356 bytes
SHA-256: dc73d1475286564dbbcfd7fe1f785306788ee44bec01666c46f1ad38f7aa2791

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