Malicious PDF — malware analysis report

Static analysis result for SHA-256 3beba15468aad124…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 00:01:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 626762a183658ae346bdd486c3ee74b3 SHA-1: bf2cf37a5cd1171f07b0ab496ae208697b17ce0a SHA-256: 3beba15468aad124eaec6f82f515e323f2a1736082038b6dab3dde48630fd7da
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are presented as download opportunities for game-related cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' score is very high, suggesting malicious intent. The document body and extracted URLs reinforce the theme of luring users to download potentially harmful content.

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/free-accessories-alfheim-online-roblox-game-hack
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-entrepreneur-tycoon-cheats_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/is-hacking-illegal-in-roblox_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-online_GM406889139.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-spin-app-coin-master_GM406889139.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-and-no-survey_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-hack-someones-account-in-roblox_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/tiktok-free-or-not_GM835599320.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-enter-cheat-codes-on-roblox_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-today_GM406889139.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/hack-downlad-roblox_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-discord-group_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/legitimate-coin-master-free-spins-apk_GM406889139.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/get-free-robux-generator-no-human-verification_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/microsoft-roblox-rewards_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-jailbreak-how-to-get-vip-for-free_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/wall-hack-roblox-counter-blox_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/minecraft_GM479516143.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/roblox-cheats-hacks-free-com_GM431946152.pdf
    • http://www.kpud-gianyarkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-java-minecraft-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000317e.bin
322115473e90b04730b691dbe8c453a61490bfb21ddd338212b5203a6a3a0f19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x317E 21492 bytes
font_01_sfnt_off00006089.bin
b09a0b167f687ef2ed7f59d9b0ff74b96adc920eaecbbf70472c17dec200d337		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6089 19196 bytes

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