Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf2fe7a0e0769d90…

MALICIOUS

PDF

34.9 KB Created: 2021-07-02 00:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 941971e0ef27e6991b4ca3ed84475bfa SHA-1: 5f37f40a74cd758d890cf1aa83352e472289d16b SHA-256: cf2fe7a0e0769d900ceb4607c4f87283f8950f5aa81e87964c1ed8e6b2fd40e3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary lure related to 'free game hacks' for popular titles like Fortnite and Roblox. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's a redirector designed to trick users into downloading potentially harmful content or visiting phishing sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/fortnite-roblox-play-free-game-hack PDF link annotation
    • http://atiltd.com.tw/upload/files/how-to-hack-back-into-your-old-roblox-account_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-robux-without-downloading-an-app_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-noclip-hack-download_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/hack-roblox-wipeout_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/slerp-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-hack-in-roblox-jailbreak-2021-mobile_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/icloud-the-cheating-app-for-roblox_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-any-model-for-free-on-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-generator-gg_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-hack-roblox-using-cheat-engine-63_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-free-robux-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-health-hack-2021_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/big-brother-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-place_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-roblox-avatar-stuff_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/daily-free-spins-coin-master-2021_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_off00002f14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F14 22984 bytes
SHA-256: 071130a552a57a4d45824007632f7106b33180c9cca444bd4a4690249931d124
font_01_sfnt_off000062f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F6 19208 bytes
SHA-256: 7a8a2b9e4d94a253c22b21c365d04761a8bc0641ddaf56b0c415bdc72fc09f40

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