Malicious PDF — malware analysis report

Static analysis result for SHA-256 29b92e7e5ecbc40a…

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 17:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0d57288ff504c1f549b20def88460468 SHA-1: 2254a5d48fca296784b38f8d7947c0cbce8f184a SHA-256: 29b92e7e5ecbc40a54fbac47d8ed006d86737bfaf34e56401aaacd492a778491
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a lure related to game hacks and free in-game currency, specifically mentioning 'Coin Master' and 'Robux'. The primary malicious URL identified is 'https://netcdn.online/app/406889139/free-spins-and-coins-coin-master-links-game-hack'. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to potentially malicious sites, likely as part of a phishing or scam campaign.

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.online/app/406889139/free-spins-and-coins-coin-master-links-game-hack PDF link annotation
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/roblox-hack-the-streets_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/tiktok-followers-free-no-verification_GM835599320.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://kejari-denpasar.go.id/public/ckfinder/userfiles/files/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005485.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5485 25248 bytes
SHA-256: d917dff2a84f7f2651c01f25369e019ecd9f99645a470a57840eb84ad62b4cdf
font_01_sfnt_off00008dfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFC 18228 bytes
SHA-256: 69b56589237c96fdda83d18de15f7bb650a68c91d961ede8b08ce7eda2bec3b9
font_02_sfnt_off0000afd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFD0 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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