Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbaeadf23cba7775…

MALICIOUS

PDF

32.4 KB Created: 2021-06-29 15:02:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b3869f1fbc6204e100b7eb4e1482170d SHA-1: 759e77d601f4ca5bb424240dc9c68df68109c7bb SHA-256: bbaeadf23cba7775c66b2e81cc0ba0947d4f796d0a3192fb8ed45ebdc99b81f1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO link farms, suggesting a deceptive intent. The document body explicitly mentions 'Roblox Free Hood' and 'CLICK HERE TO ACCESS ROBUX GENERATOR', directly luring users to download potentially malicious content from URLs like http://netcdn.co/app/431946152/roblox-free-hood-game-hack. The ML classifier also flagged this PDF as malicious with high confidence.

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/roblox-free-hood-game-hack PDF link annotation
    • https://3qblocks.com.tw/image/data/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-free-wings-to-wear_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/cheat-engine-trainers-for-roblox-list_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/roblox-free-robux-hack-apk_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/tiktok-free-tv-shows_GM835599320.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/pubg-uc-qiymetleri_GM1330123889.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/meney-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://3qblocks.com.tw/image/data/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2923 22224 bytes
SHA-256: 1d89be85b2363b751c217d078a9bc52d3201e85fe62cadf6059c8a666f3a3b34
font_01_sfnt_off00005a7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7A 18824 bytes
SHA-256: 8e0cc4fa2788f1dbb13a72e7e27d821a31fc9d2d44cb5ae407e969f4607ab89e

Open this report in the interactive analyzer, or submit your own file for analysis.