Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9689287984aefc…

MALICIOUS

PDF

35.3 KB Created: 2021-06-26 03:56:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3148ddef04d5de29ce76aec59d18a72a SHA-1: 11da0512c299232452f702a463ba75310317767e SHA-256: cc9689287984aefc34e9dae4c5eab5ca71a0beace4eefc5c318561cbd2f54d26
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a "link farm" structure, strongly suggesting it is designed to redirect users to malicious websites. The document body and heuristics indicate a lure for game hacks, likely leading to malware downloads or further phishing attempts. The ML classifier also flagged this PDF as malicious with high confidence.

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/hack-xp-mad-city-roblox-game-hack
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-vehicle-simulator-speed-hack_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-hacker-kolorowanki-do-druku_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/hack-coin-master-free-spins_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/online-hacking-tricks-coin-master_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/free-minecraft-server-hosting-with-plugins_GM479516143.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-your-hacked-roblox-account-back-2021_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/free-pet-snacks-coin-master_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/coin-master-connection-lost_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/free-robux-hack-2021-june_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/how-do-you-get-roblox-for-free_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/roblox-sir-robux-hack_GM431946152.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdf
    • http://inforplace.com.br/ckfinder/userfiles/files/how-to-get-a-free-dominus-in-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003157.bin
67bc878fe5afacf7d413d7aed69e504361d3576ef7eae4a07047c7e1886d08bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x3157 22480 bytes
font_01_sfnt_off00006361.bin
49cb7ddc823350f043fad91c3c0a3aba0a35e4109595df2cf13355a4b2f07896
pdf-font-stream PDF embedded font (sfnt) at offset 0x6361 19608 bytes