Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dce1f35cab1d7d5…

MALICIOUS

PDF

49.1 KB Created: 2021-06-11 06:01:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dabfde98ab8337c5c0d8bf529ae89eb1 SHA-1: 0c0c3edb4ecef901fba7459ad816ee2471e9f6f7 SHA-256: 6dce1f35cab1d7d57723a17f35f6f8e151f84721a5adaeedbf45fa6185fa8026
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that lure users with promises of game hacks and generators, specifically mentioning Roblox. The primary URL, https://netcdn.tw/app/431946152/roblox-hack-client-2021-wrd-game-hack, is likely a redirector to a malicious site. The document's structure and content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/roblox-hack-client-2021-wrd-game-hack PDF link annotation
    • http://greenpasturesfarm.com.au/images/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-hack-roblox-jailbreak-xbox-one_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://greenpasturesfarm.com.au/images/download-roblox-free-on-mac_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000527c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x527C 26632 bytes
SHA-256: 0af45330340fad124cb053a421e0d6b8e6363f45e158e9e48284c73bc3f19c13
font_01_sfnt_off00009026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9026 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off00009a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A51 19180 bytes
SHA-256: 284bc6d4fe74da6b090a82b607fa69f24f1159ec99b24c0fdc230ab53fcc40bd

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