Malicious PDF — malware analysis report

Static analysis result for SHA-256 6807cc0055806b9b…

MALICIOUS

PDF

35.7 KB Created: 2021-07-09 08:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9772f8d439657659c16cf9ef1141ac8e SHA-1: 1aefbbef2046224a368392fe811f32ed7f7ddf1a SHA-256: 6807cc0055806b9b8ecb5fa2e7c8e9cec8741d8b27edcc74f685a8b3e1839e7d
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/406889139/coun-master-game-hack PDF link annotation
    • http://nationshield.ae/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/get-free-robux-using-no-surveys_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/rainbow-orange-roblox-free_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/no-offer-needed-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/websites-that-give-you-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
stream_002_off0000352d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x352D 23472 bytes
SHA-256: ca0419ae26b85679aa68b6397c13df1549ccc97fc1e67b578f757f6f03e7fa6e
font_01_sfnt_off00006a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A60 17856 bytes
SHA-256: a248657c98370cc2bb7e99f773c123f15ae7091518c20bef8c5b84faaed720ea

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