Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b05141838a8fb9…

MALICIOUS

PDF

33.4 KB Created: 2021-07-19 23:33:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 06f9793559ce0bfa517f4ff4f230a026 SHA-1: ab9c072ffa583667905ae39f9941075aa20ea926 SHA-256: d0b05141838a8fb9a9eab2aa80962fd8b9723414001a149337ea94834afd71b8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one that explicitly advertises 'coin master free spins and coins'. The ML classifier also flagged this PDF as malicious. The presence of these lures and the high ML score indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/406889139/coin-master-free-spins-and-coins-today-gift-reward-game-hack PDF link annotation
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://ntfdubai.net/uploaded_files/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002d00.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D00 22824 bytes
SHA-256: 32c8c813b62f428aff2dcc2115b37322e5d107085caf33623fa6c81de0279710
font_01_sfnt_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 18404 bytes
SHA-256: 20323906fae34ef48fb3028b175607ed26afea8233a7a83525bcd6516f32abbb

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