Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dcf6c0cf5a7b7b9…

MALICIOUS

PDF

48.2 KB Created: 2021-06-11 01:33:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2bc802ac8659f44250ef3eee224f5e87 SHA-1: 470cd601132f6156165727ffc689064b1d851c8a SHA-256: 3dcf6c0cf5a7b7b9555c57311295a8fec81cb19be04cec1f594a743c5748d8ec
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lure users with promises of game cheats and hacks, specifically mentioning Roblox and Coin Master. The primary URL, https://netcdn.tw/app/431946152/roblox-lumber-tycoon-2-money-cheat-game-hack, is flagged as a game hack redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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-lumber-tycoon-2-money-cheat-game-hack PDF link annotation
    • http://io24.com.ar/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/robux-free-hack-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/skisploit-roblox-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/hack-robux-roblox-2021-funciona_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/identifty-fraud-roblox-maxe-1-cheat_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/cheat-roblox-menu_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/roblox-deadzone-hacks_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-generator-tool-download-link_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • http://io24.com.ar/images/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://io24.com.ar/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/collect-robux_GM431946152.pdfIn PDF document text
    • http://io24.com.ar/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f82.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F82 27088 bytes
SHA-256: bf7ec83fc4237e96ea94daed46123fa2192ec6b6530f93105f51b39a1f152cf3
font_01_sfnt_off00008d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D43 2824 bytes
SHA-256: bd082aa73fbb1a8b3bd2e5c998d3d8e31d1dfc71ea36f846af746f69a0d2ab7f
font_02_sfnt_off000096f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96F7 19184 bytes
SHA-256: ee7723fd00aa62bc4446a284a4977989784d53304bd2d519878943739066cc72

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