Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e09aa89aa22440…

MALICIOUS

PDF

48.0 KB Created: 2021-06-04 02:25:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d6d9c04077999c136d23a6ae4d6197c6 SHA-1: 737129b018f229b5741f3900f4d6c9afe3224f13 SHA-256: e9e09aa89aa224406dc1a71341f4b7ebc52fd44f0bc0aa524bae0c7c234819d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which appear to be part of a link farm designed to host game-related lures. The primary URL, 'https://netcdn.online/app/431946152/win-free-robux-game-hack', suggests a lure for free Robux, a common tactic for distributing malware. The ML classifier strongly indicated maliciousness, and the presence of a 'download button' heuristic further supports a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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 https://netcdn.online/app/431946152/win-free-robux-game-hack
    • http://perpustakaan.bkkbnkaltim.id/repository/arsenal-hacks-roblox_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/minecraft-java-edition-code-free_GM479516143.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/today-free-spin-coin-master_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/get-free-spins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/how-to-get-free-roblox_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-spins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-free-body_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-sexually-abused_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-coins-coin-master-link_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/get-free-robux-without-human-verification_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-hack-xyz_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/how-do-i-get-free-coins-in-coin-master_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/roblox-shirt-template-free_GM431946152.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-spin-coin-master-link-today_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/free-ka-tik-tok_GM835599320.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
    • http://perpustakaan.bkkbnkaltim.id/repository/coin-master-hack-september-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053ac.bin
d333d85fcc190c331bf0f4bb9675a0e94c30ee245e1ce827d8076ba27b2272f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53AC 29488 bytes
font_01_sfnt_off0000991d.bin
abf0b8ed31f5047ebf3c1463738251345f2a3e8ea43e3f17fb5c5b26bb0b5a7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x991D 18332 bytes

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