Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6fc937d94bdf03…

MALICIOUS

PDF

35.0 KB Created: 2021-06-21 01:08:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b4b6bc652ffb8335f039d9f77353a370 SHA-1: 51a5159db00a4e4c5b5978f2148fb009ffe26274 SHA-256: 6d6fc937d94bdf0328e911abcf2e0ace3b6f6913b9c7a8fdd6446003947bb6be
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to websites offering game hacks and cheats, a common lure for malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves tricking the user into visiting a potentially harmful external site by promising in-game advantages.

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/roblox-bloxburg-tips-and-cheats-game-hack PDF link annotation
    • https://htdvn.com/public/upload/files/hack-avatar_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/is-jailbreak-detection-proxo-hack-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/fast-robux-online_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-hack-money-driving-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/pokemon-go-free-stuff-codes_GM1094591345.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-hack-for-android_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_off00003003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3003 22632 bytes
SHA-256: b578ec930b8edd27a8a7499c5f3e73e7b408d47c7ebffeb3b2078395d559af7a
font_01_sfnt_off000062f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F1 19364 bytes
SHA-256: 313c4bf284460be2742423a36cdc26a98c312cd407dfc6a18cad37184c488ebc

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