Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfe5bcbba8949d7…

MALICIOUS

PDF

26.0 KB Created: 2021-06-26 01:29:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fdf794cc7613de141923c73d132bea6c SHA-1: 73b2bf77d2861bcf4f26edfa36c47d67fb632b3a SHA-256: 6cfe5bcbba8949d73f5bea7db3c921e2647c82308337affc7350e4d61e3b81c2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs disguised as links to free in-game items for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves directing users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/roblox-how-to-get-shirts-for-free-game-hack
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-ban_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/fastbux-me-free-robux_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-cheats-2021_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spin-and-trading_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/robux-link_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-100-works-no-human-verification_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/new-roblox-exploit-wizard-simulator-hack-god-mode-autoattack-1mp4_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-in-unboxing-simulator-roblox_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-card-collection-hack-apk_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-robux-gift-card-free_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/robux-free-no-hack-is-free_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/body-roblox_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-link-daily_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/best-free-spins-link-coin-master_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coinmaster-free-cards_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f89.bin
123f9461be339c7b2432a8082990e80aa25de7a2a73aed282b5a858c830d2568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F89 21876 bytes

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