Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7b3c602c28f4bc…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 20:33:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a695c6dee381b9a9544b6eecc25ae7be SHA-1: 8f048b8b1c41b1ef7b2576ce8df2e50476c596a1 SHA-256: 6c7b3c602c28f4bcc3f50ff498d77dbdf8c3c438c399cc24d5eea30ff05b30f6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body also contains this URL, reinforcing the lure. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, but the embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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/minecraft-free-download-mobile-game-hack PDF link annotation
    • http://www.luangtai-ngao.go.th/UserFiles/File/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/pokemon-go-gameplay-free-online_GM1094591345.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-fix-roblox-studio-from-hacking_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-roblox-accounts-without-pin_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-hair-roblox-not-moel_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/hack-lua-roblox_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/biulders-club-robloxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/robux-download_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-robux-using-a-website_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/earn-free-robux-rbxnow-gg_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/cheats-and-codes-for-snow-shoveling-simulator-roblox-pc_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/robux-com-free-account_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://www.luangtai-ngao.go.th/UserFiles/File/free-robux-no-human-verification-or-survey-or-download-2021_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_off00003256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3256 22404 bytes
SHA-256: 7eced5e8461cb157f10dd0a5eb234fdb5520688fbc923cc080ae147e8e329e2c
font_01_sfnt_off00006441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6441 18736 bytes
SHA-256: b6e051f0b4e02b7356fd7079c0d6036a663a9338c3288034fa352d97dcc0d1e4

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