Malicious PDF — malware analysis report

Static analysis result for SHA-256 966d2e24d679f96c…

MALICIOUS

PDF

36.3 KB Created: 2021-06-27 07:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 0a6bd3347ce2daae4c2d90019292561a SHA-1: f45741955ddb92b20daf3de9e8ebae3c7549060f SHA-256: 966d2e24d679f96c0a32925db08a0b7ff81d4a3da9e8babb82419e5064675412
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a game hack lure, specifically mentioning 'cheat engine roblox'. The embedded URL http://netcdn.co/app/431946152/cheat-engine-roblox-2021-august-game-hack is presented as a call-to-action, likely leading to a malicious download. No scripts were extracted from this sample.

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.co/app/431946152/cheat-engine-roblox-2021-august-game-hack PDF link annotation
    • https://cnc-xinrong.com.tw/image/data/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-use-roblox-hack-scripts_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-hack-roblox-database_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/roblox-hacks-bubble-gum_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-jailbreak-coins-roblox_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://cnc-xinrong.com.tw/image/data/files/free-coins-coin-master-haktuts_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
font_00_sfnt_off000035da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35DA 22488 bytes
SHA-256: a6e084f20268f3b84c608da2bd6e777e39ac41663f8dca4ac82d25c111121957
font_01_sfnt_off000067c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C3 19420 bytes
SHA-256: ad37831275b2093fa5404822317fa3726d153d7328599984b9c1f6fc89606ae1

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