Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6f5ad71954f884…

MALICIOUS

PDF

42.3 KB Created: 2021-05-11 12:46:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 05cfdc20d7839a2c67ef6042063f9ca7 SHA-1: 493eb1ab91bb610f0b91042287f437429e40659c SHA-256: 6c6f5ad71954f88488d893308307a9af2ac1eb526ff8d84f1cd4ecdf0681ae59
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 0.9971

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/431946152/free-draw-2-roblox-game-hack PDF link annotation
    • https://www.ghknights.org/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.ghknights.org/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.ghknights.org/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://www.ghknights.org/images/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.ghknights.org/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://ghknights.org/images/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • http://ghknights.org/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://ghknights.org/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.ghknights.org/images/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.ghknights.org/images/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • https://www.ghknights.org/images/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • https://www.ghknights.org/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ghknights.org/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://ghknights.org/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://ghknights.org/images/i-want-robux_GM431946152.pdfIn PDF document text
    • https://www.ghknights.org/images/install-coin-master_GM406889139.pdfIn PDF document text
    • http://ghknights.org/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://ghknights.org/images/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.ghknights.org/images/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ghknights.org/images/free-spin-app-for-coin-master_GM406889139.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
stream_003_off00004786.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4786 25212 bytes
SHA-256: 24334eb20620870c47e7bc308fd8d625365b117de9dbd0041e654b98d6c0755e
font_01_sfnt_off000081c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C9 18632 bytes
SHA-256: 1948321e46036ef7a86fce7363c42741d482fdecd1af70e946b235d8b00c49b1

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