Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b965dfc9ff7665f…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 12:05:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 752dce248bec927de92fa1a141ae898a SHA-1: 1a2ae073c8361dcfe64296002fa9cdff86862062 SHA-256: 6b965dfc9ff7665fbe056f4a518694f58c331379ad8122487bb150cef4da947d
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 0.9980

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/how-to-get-free-robux-without-downloading-anything-game-hack PDF link annotation
    • http://educhina.mn/editor/files/wurst_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/jump-hack-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-a-free-unicorn-on-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-games_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/vermillion-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/generator-free-account-old-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/five-roblox-games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/coin-master-today_GM406889139.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-codes-may-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/how-to-get-free-money-in-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/free-robux-now_GM431946152.pdfIn PDF document text
    • http://educhina.mn/editor/files/hacked-server-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E86 21736 bytes
SHA-256: 35e98176b2c7da3e12e920911de8e092bb05535a1a09c94abbb2b91d7161fbc4
font_01_sfnt_off00005e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 20064 bytes
SHA-256: b16c0b2685476b12d790c98b25c02402c4aa59cc1950d8e2b4913e5425ac04b7

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