Malicious PDF — malware analysis report

Static analysis result for SHA-256 683203ef22654efe…

MALICIOUS

PDF

48.0 KB Created: 2021-05-13 17:46:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ed98b8dcb26d977ef27bbd7bbf6c0f01 SHA-1: bc42debec9e4102ead7c03befb7b9b469c766d00 SHA-256: 683203ef22654efec3c1521d41ebe2883c3d9eb700ddcc5969887fefdbe2b1aa
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 0.9013

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/how-to-hack-peoples-roblox-accounts-game-hack PDF link annotation
    • https://globair.com.tw/image/data/files/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/link-coin-master_GM406889139.pdfIn PDF document text
    • https://globair.com.tw/image/data/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a6f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A6F 27748 bytes
SHA-256: be29c0276127c623593d97392ce230dd2ae77f2ab8824509b8c86a052bb1f67b
font_01_sfnt_off00008a1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1F 3992 bytes
SHA-256: 43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd
font_02_sfnt_off00009745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9745 18920 bytes
SHA-256: cd7407ef9aef6c4c50b1fdf01e763fd2e22944ade267215dee183f168e7b87f5

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