Malicious PDF — malware analysis report

Static analysis result for SHA-256 233a8feaf4814968…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 16:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 59b37d3f789718ae0be78be105dbacf8 SHA-1: 59b39ca3f7428ee54466db856424268f29b7bf07 SHA-256: 233a8feaf48149686c157ca94ed68fed7758a024f78891adaf41fa0a77e028ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains heuristics indicating it is malicious and uses social engineering to trick users into installing software or downloading files. It presents a fake download button and a lure for a browser extension or update, directing users to external URLs that likely host malware. The embedded URLs suggest a theme of free game hacks and generators, a common lure for malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.xyz/app/431946152/roblox-skin-free-game-hack PDF link annotation
    • https://shjbottle.com/upload/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-games-com-free_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_off00003010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3010 29552 bytes
SHA-256: a99ce9653aead37fd44b2218ccfcb311679fe3039bce048ad80a7e91049bd753
font_01_sfnt_off000070e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E7 18236 bytes
SHA-256: 6f613c146b2caf8aa71dfdba399286dfcc190b8555f8633d10d72eb14be7938a

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