Malicious PDF — malware analysis report

Static analysis result for SHA-256 542ec672bb6f8f95…

MALICIOUS

PDF

34.0 KB Created: 2021-07-09 03:30:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 426c519b371b1c60387a0326cfbb0bae SHA-1: bcd84e7ac1d9e54f2806f5746196a092c796ea7b SHA-256: 542ec672bb6f8f9599ee7940db99ec96649ef40ad8d7ce2a323ab95a8c29d4ba
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically pointing to 'http://netcdn.tw/app/479516143/how-to-get-free-skins-in-minecraft-game-hack'. The document body also contains this URL and other similar game-related lures, suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a potential for further malicious activity, such as downloading a second-stage payload.

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.tw/app/479516143/how-to-get-free-skins-in-minecraft-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/earn-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/what-tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/apps-that-actually-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-tablet-cheats_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/murder-mystery-roblox-free-knife-codes_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-obby-meaning_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-currency-hack-lua-script_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/ezrewards-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-free-dresses_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/rbx-land-free-robux_GM431946152.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_off000030ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CA 22280 bytes
SHA-256: 8303a24fe12b783767ad3edde17bc360635d315570303bcace95b8db313057af
font_01_sfnt_off0000621a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x621A 18332 bytes
SHA-256: aae53986d5e040802ba5fac0bdf7ddb8e28dcfd27e7dab4d6fe2a7bdc2952b4d

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