Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd2e7ebca27565f1…

MALICIOUS

PDF

34.3 KB Created: 2021-06-20 02:58:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3e6246998c50213155de3554c9563244 SHA-1: 59135c5dcbc128c8a9725f1f3d232a1351ad0f76 SHA-256: cd2e7ebca27565f142f1bca4447280b9f0da48ccbc0e060d4835f36ca3bbfcb3
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, many of which are structured as a link farm for game hacks and cheats, suggesting a lure to download potentially malicious software. The ML classifier also strongly indicated maliciousness. The primary goal appears to be directing users to download executables or other payloads from external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/download-roblox-hack-for-pc-game-hack
    • https://perpustakaan.man2kotaserang.sch.id/repository/fly-hack-download-roblox-2021-gameguardian_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/free-roblox-hair-to-wear_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-free-spins-2021-link_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/how-to-hack-roblox-group-ranks_GM431946152.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/minecraft-for-ipad-free_GM479516143.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/coin-master-free-pet-food-links_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id//repository/coin-master-hack-no-root_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/mcpe-master-coins-hack_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/info-roblox-com-robux_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/serveur-roblox-avec-admin-free_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/is-coin-master-hack-safe_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/minecraft-hack-client-download_GM479516143.pdf
    • https://perpustakaan.man2kotaserang.sch.id/repository/roblox-hack-for-kids_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/coin-master-unlimited-spin-link_GM406889139.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-hacks-project-alpha_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-hack-robux-2021-unlimited-robux-and-tix_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/roblox-ban_GM431946152.pdf
    • http://perpustakaan.man2kotaserang.sch.id/repository/pokemon-go-free-games-online_GM1094591345.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e69.bin
dace1ed60258f26bd671fb3499ce2c737436288a8e31d463982c245435d7eee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E69 22264 bytes
font_01_sfnt_off00005fb2.bin
98941003cfdf1c92e4ead69c63779407bf3e9f1a74e11bcf81de8f5cc1f949de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB2 19480 bytes

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