Malicious PDF — malware analysis report

Static analysis result for SHA-256 50146e5337605a33…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 15:07:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2718e953edf981f83bf70796ee9bce77 SHA-1: 61f8adc7b7ca8fb361d3d532d8bb297076a72d8c SHA-256: 50146e5337605a33f69606aa712ff00d5575ad85c38cf58d078bfc64fcabc992
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 hosted on domains like 'selesindihome.com' and 'netcdn.tw', and are presented as downloads for game hacking tools. The document body explicitly mentions 'How To Hack Roblox Accounts' and includes a direct URL to a potential payload. The presence of a large number of external links and the deceptive content strongly suggest a phishing or malware distribution attempt.

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.tw/app/431946152/how-to-hack-roblox-accounts-game-hack
    • https://selesindihome.com/ckfinder/userfiles/files/free-robux-hacker-us_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/hacking-software-for-roblox-download_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/minecraft-the-complete-handbook-collection_GM479516143.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/free-robux-apps-that-work_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/minecraft-handbook_GM479516143.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/roblox-robux-hack-no-survey-no-download_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-card-hack_GM406889139.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-create-a-minecraft-server-for-free_GM479516143.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-spins-hack-2021_GM406889139.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/roblox-chat-hacks-grab-knife_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/free-robux-codes_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-home_GM406889139.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/how-to-get-free-coins-for-coin-master_GM406889139.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/free-spins-coins-coin-master_GM406889139.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/free-coin-master-s_GM406889139.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/is-roblox-free-on-nintendo-switch_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/download-roblox-hack-apk-pc_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/ssuper-speed-hack-in-roblox-2021_GM431946152.pdf
    • https://selesindihome.com/ckfinder/userfiles/files/coin-master-free-spins-apk-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_off00003059.bin
60c5cbfec69a96ef93af2815309bde4166535c4478d678fd66bf2ba796034cbb
pdf-font-stream PDF embedded font (sfnt) at offset 0x3059 22580 bytes
font_01_sfnt_off000062d3.bin
8c571bf80081aaa5c2be303b8c9fe18b31c5334a74c17f7b55d65649f5ee093a
pdf-font-stream PDF embedded font (sfnt) at offset 0x62D3 19064 bytes