Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d4ae9e61715f2e…

MALICIOUS

PDF

35.8 KB Created: 2021-06-26 19:25:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8d489799f121376d733882dca31c1bba SHA-1: 95a39bcc27c8fd67496af004ee9d516ddda66341 SHA-256: c2d4ae9e61715f2ee378305ebc15c1172c156aa094697f81b1352cb4f54cfe36
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 'download button' lure, suggesting it is designed to trick users into downloading malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm indicates a potential SEO poisoning or link-farming tactic to distribute malware disguised as game cheats.

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/cheat-engine-bypass-roblox-2021-game-hack
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-hacks-for-free-spins_GM406889139.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/is-tiktok-free_GM835599320.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/pokemon-go-free-kr-hack_GM1094591345.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/hacks-for-roblox-assassin-auto-aiming_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/how-to-get-free-roblox-gift-cards-2021_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-robux-get-com_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-spins-hack-iphone_GM406889139.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/roblox-character-free_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-free-bonus_GM406889139.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/get-free-dominus-on-roblox_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/how-to-get-free-robux-website-and-group_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-fan-page-giveaway_GM406889139.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/apps-to-get-free-robux_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/roblox-re_GM431946152.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/coin-master-free-spins-hack_GM406889139.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/download-minecraft-java-edition-free_GM479516143.pdf
    • http://church01.jworld.i-powers.com.tw/webdata/ckfinder/public/userfiles/files/free-spin-link-of-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003277.bin
08060af7f6dbebdf289cdfdbf02b93af1b7a7e54013d262f47abbf904e0983b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 22716 bytes
font_01_sfnt_off0000652d.bin
13279fab2839127e5dbe4e1b7d9a481c91e189710a0febda3428d502f47a4302
pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 19632 bytes