Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a149a859b5acd82…

MALICIOUS

PDF

48.4 KB Created: 2021-04-23 21:04:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-07
MD5: fe9c8b52a98431339b91176b5551c53a SHA-1: 8ee4e194851c6a89baa4f2e6fd7a8f20e7448e81 SHA-256: 8a149a859b5acd823ec380b4ca4a34a9f6720ff3a18aebfbf852bfe68492ff66
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'game hacks' for Roblox, directing users to a suspicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful content. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9915

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://netsecure.top/app/431946152/btools-hack-roblox-may-2021-game-hack PDF link annotation
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-free-robux-games-have-roblox-admins.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/robux-hack-client.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-hack-tower-of-hell-roblox.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/can-u-earn-free-robux-in-roblox.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-bot-free.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-robux-and-tix-in-5-minutes.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-hack-gg-uardian.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-robux-youtube-2021.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-use-money-hack-in-roblox-any-game.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-no-pass-or-survey.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
stream_003_off00003efc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3EFC 42784 bytes
SHA-256: b76463a2c1f249e4e369abc2da4416df10fb27680f7ecbb34d619f60ecff7dcb
font_01_sfnt_off0000999b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999B 19064 bytes
SHA-256: c51426f7c6663f227ab5352233ced9c1b141819417fbbf5ef111c0e38f406403

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