Malicious PDF — malware analysis report

Static analysis result for SHA-256 4934c66a82829684…

MALICIOUS

PDF

34.5 KB Created: 2021-07-08 15:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d3e0f034d7082da0534df216339b81a5 SHA-1: 6ebf8d0d60e13e8f432d10a404d148be0b4bf86e SHA-256: 4934c66a828296848276115bae6b44bd6c197a8e96dcc0964107acda57e62b08
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/free-robux-without-verify-game-hack PDF link annotation
    • http://wwic.wales/uploads/files/files/roblox-hockey-mask-free_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-hack-download-games_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-robux-website_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/bit-ly-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-how-to-get-free-items-in-game_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-get-free-teeth-in-sharkbite-roblox-2021_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/websites-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-roblox-promo-codes-march-21-2021-twitter_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/how-to-get-free-robux-2021-new_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/roblox-jailbreak-play-for-free-online_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://wwic.wales/uploads/files/files/free-coin-master-spins_GM406889139.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_off00002e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E89 22284 bytes
SHA-256: c0cf4c17ea4acc612f5552d35a84dcaa40298b89380e58c562f274e7212d4fef
font_01_sfnt_off00006005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 19620 bytes
SHA-256: 8aa86329d0795ab1cad193d913199e82be4c5431cadd1cc96f2f7af8a2f6b0e0

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