Malicious PDF — malware analysis report

Static analysis result for SHA-256 46223ed8dc7b38ce…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 22:14:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0592e87bb38e9a267b8e29ea5d23ae3f SHA-1: 261ddc480a64e036c08e5aa4d639f74e750a9082 SHA-256: 46223ed8dc7b38ce36b0f5844a5ddf43d1d67f4af2217f880b84f2db6a58b180
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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-spin-link-coin-master-today-game-hack PDF link annotation
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/hack-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/roblox-scam_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://perpustakaan.poltekom.ac.id/repository/is-pokemon-go-free-on-iphone_GM1094591345.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_004_off0000503a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503A 24076 bytes
SHA-256: 7598097225c5d231c17bb7affb1450bb735c3aadbccc4a601ff507de36f8e70e
font_01_sfnt_off000086da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DA 18412 bytes
SHA-256: e587088874bde045b6c3de0610cebf0d89afe726cd39a539bf85554ca93a9bfa

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