Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f542a2bfad007b2…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 21:28:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5503418d07f0da4062448433e65c7fb9 SHA-1: ad123111af8d1133561023cc58d5edf0ae66e20f SHA-256: 8f542a2bfad007b29d6a4c07a066590de54786ef096fbdb78184b73132d07b28
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm, suggesting an attempt to direct users to malicious content. The document body mentions "Hacks On Roblox" and includes a URL that appears to be a download link, indicating a lure for potentially harmful files. The ML classifier also strongly flagged this PDF as malicious.

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/hacks-on-roblox-to-change-ur-look-game-hack
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-free-draw-alpha-2_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-moderators_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-spin-generator-for-coin-master_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-without-verification_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-app_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-hack-online-2021_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/play-coin-master-for-free_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-daily-free-spins-link_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-cheats-computer_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/join-builders-club-roblox-free_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-spin-links-coin-master-2021_GM406889139.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/robux-simulator-hack_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b3.bin
bd0123deeb74c5a1b8c15054d9a3ae0d9c2e8b9aca3fe123349791fb327b5aa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32B3 22396 bytes
font_01_sfnt_off00006482.bin
240d50e1a4980150cdc0ac45b66a395d7f59e6be5a56687d6a697310de4dadb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6482 18820 bytes

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