Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32c0e02a2eee6a4…

MALICIOUS

PDF

33.6 KB Created: 2021-06-28 06:35:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e39af8fc0b8199d452c1e4cb6a012b9c SHA-1: 723c411c191ab609914315884ec9b289647240e7 SHA-256: f32c0e02a2eee6a402a00ea760cc24d8fd8669a61f45a597879d90598a7780a5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats, suggesting a lure for users to download potentially malicious software. The heuristic PDF_SEO_LINK_FARM indicates a large number of such links were generated, and the ML classifier strongly flagged the document as malicious. The presence of a 'Download Now' type phrase further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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.co/app/431946152/cheat-engine-admin-hack-roblox-game-hack
    • http://perpustakaan.pn-tapaktuan.go.id/repository/coin-master-hack-no-human-verification_GM406889139.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/how-to-hack-to-get-roblox-money_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/how-to-noclip-in-roblox-cheat-engine-67_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/can-you-trade-free-accessories-on-roblox_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/coin-master-claim-spins_GM406889139.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-ways-to-get-robux_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-girl-body-in-roblox_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-free-pets_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/fotos-de-hacker-en-roblox_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/spin-coin_GM406889139.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-robux-websites-that-work_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-spins-coin-master-2021-glitch_GM406889139.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-robux-real-working_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-free-items-thubnail_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-free-game-no-need-to-install_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/minecraft-servers-that-allow-hacks_GM479516143.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-free-robux-hack_GM431946152.pdf
    • http://perpustakaan.pn-tapaktuan.go.id/repository/how-to-earn-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b42.bin
15ec402926c6cd6b93961848ce4087382abf057a098d22fd9f211b45f298c761		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B42 22440 bytes
font_01_sfnt_off00005d55.bin
69fdae3754793c9f793b3511bc7dfff6317f7162e3b27b396b8c87faea21391f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 19480 bytes

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