Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3acc75a3108834…

MALICIOUS

PDF

33.8 KB Created: 2021-07-03 16:12:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 62f10a950ca8a380926fef22b4e857c8 SHA-1: 134e2186fa77dd35a1c8b150c6c34d909302ddd5 SHA-256: df3acc75a31088348bb6bc5a04010254465364446f9eea518241ffc1e723d790
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/431946152/roblox-com-free-game-hack. This lure is designed to trick users into downloading malicious content or visiting phishing sites. The ML classifier also strongly flagged this PDF as malicious.

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/roblox-com-free-game-hack PDF link annotation
    • https://sensorcamera-tw.com/upload/files/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/android-roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/hacking-roblox-through-cookies_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/farming-simulator-hack-roblox-script_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/epic-free-robux_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-roblox-account-gettet_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-hack-download-pc-no-virus_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-views-tiktok_GM835599320.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/all-roblox-gamepasses-for-free_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/hack-for-pet-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/space-frontier-beta-release-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/roblox-spin-hack_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://sensorcamera-tw.com/upload/files/free-robux-no-verification-2021_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_off00002e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E85 22212 bytes
SHA-256: f3684fb29a51406496fc4855f57a913c2803f5c2a8fa19612594e20da94ddb49
font_01_sfnt_off00005f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5A 18908 bytes
SHA-256: d7faed6d58590bc3db8452d75d45c5ddbd3bd0ed4824773c2a41f6fe87d8a107