Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fdfe0075832e82…

MALICIOUS

PDF

34.2 KB Created: 2021-07-03 13:57:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a69d51abb468207c31c72866dfa72628 SHA-1: 0a850831f4a50dc6a786cb62b269f49f79bb6af0 SHA-256: 96fdfe0075832e823d78fb74e703c15037374d457c69a330eab3ce9fdc8ec167
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link to 'netcdn.tw' that explicitly advertises a 'free game hack'. This heuristic, combined with the ML classifier's high confidence, indicates a lure for malicious content. The document's structure and embedded links suggest it is designed to trick users into downloading potentially harmful files or visiting phishing sites.

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/redeem-roblox-card-free-game-hack PDF link annotation
    • http://www.3d-gold.com.hk/upload/files/bot-roblox-game-free_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/green-hacked-roblox-t-shirt_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/hacker-roblox-t-shirts_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-candy-van-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/dragon-ball-ultimate-roblox-max-stats-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/get-free-robux-daily_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/minecraft-windows-10-edition-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-cheat-on-ramboredkill-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-tower-battles-cheats_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-delete-a-hack-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-get-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-robux-and-tix-hack-free-download-october-2021-update_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.3d-gold.com.hk/upload/files/roblox-hack-scripts-jailbreak_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
font_00_sfnt_off00002f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1B 22204 bytes
SHA-256: 63ca217920df451ea5c272b3239c814347f473978afcfb54a5c1d57fe1718257
font_01_sfnt_off0000609c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609C 19084 bytes
SHA-256: 28b83e4f342e4f09a2889314eefb4cea0c2396b4c6f42210c3755af6e96d1200

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