Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7b8ac31d508bc7…

MALICIOUS

PDF

34.0 KB Created: 2021-06-18 16:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c0d1b8f415e30762db0c9e087c0d555c SHA-1: a163a7e8b33f8a3ee6969413b79f321a5040c52d SHA-256: ab7b8ac31d508bc705b33771a4b9f02feb00ee744f5dfe6b931fefd23e370028
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 PDF files advertising cheats and hacks for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to drive traffic to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the embedded URLs and the nature of the content point towards 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.co/app/431946152/roblox-hack-2021-lev-7-game-hack
    • http://magnipsor.su/images/pubg-uc-nepal-price_GM1330123889.pdf
    • http://magnipsor.su/images/free-spins-on-coin-master-2021_GM406889139.pdf
    • http://magnipsor.su/images/coin-master-cheats-free-spins_GM406889139.pdf
    • http://magnipsor.su/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
    • http://magnipsor.su/images/coin-master-hack-tool-v1-9_GM406889139.pdf
    • http://magnipsor.su/images/roblox-jailbreak-cheats-noclip-teleportautorobautomoney_GM431946152.pdf
    • http://magnipsor.su/images/how-to-free-tiktok-likes_GM835599320.pdf
    • http://magnipsor.su/images/coin-master-free-spin-link-app_GM406889139.pdf
    • http://magnipsor.su/images/coin-master-daily-free-spins-hack_GM406889139.pdf
    • http://magnipsor.su/images/minecraft-the-complete-handbook-collection_GM479516143.pdf
    • http://magnipsor.su/images/how-to-hack-to-get-robux_GM431946152.pdf
    • http://magnipsor.su/images/free-coin-master-gifts_GM406889139.pdf
    • http://magnipsor.su/images/omplete-surveys-for-coin-master-free-spins_GM406889139.pdf
    • http://magnipsor.su/images/tiktok-like-bot-free_GM835599320.pdf
    • http://magnipsor.su/images/how-to-get-assasin-vip-for-free-roblox_GM431946152.pdf
    • http://magnipsor.su/images/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • http://magnipsor.su/images/roblox-server-hack-download_GM431946152.pdf
    • http://magnipsor.su/images/roblox-lumber-tycoon-2-script-hack_GM431946152.pdf
    • http://magnipsor.su/images/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • http://magnipsor.su/images/minecraft-on-computer-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e72.bin
88abc63557592d45640ebc6b25383b4149fc1fd0514f9584cb795bf280aa69a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x2E72 22176 bytes
font_01_sfnt_off00005f9c.bin
35b18994544087c8de8414d8632c5150a864cd174823e8a1730e30668c469d04
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9C 19044 bytes