Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e7f6055798f7aa…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 07:27:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cd62dd1ef60c4df893901ee3c36afc44 SHA-1: 3625158f0d1dd0f2fe26380d2f57771f0cda1833 SHA-256: e3e7f6055798f7aa5b0bd2aa11050db8a95f4f7f939c48aa7fe494cc986107b8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of embedded links, many of which are SEO-optimized and point to pages offering game hacks and cheats. The primary URL, http://netcdn.tw/app/431946152/free-roblox-hats-no-model-game-hack, suggests a lure for downloading potentially malicious content. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or malware distribution scheme.

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/free-roblox-hats-no-model-game-hack
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/minecraft-for-ipad-free_GM479516143.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-hack-into-anybodys-roblox-account-in-5-minutes_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-get-free-tiktok-followers-no-human-verification_GM835599320.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/roblox-points_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-hack-peoples-accounts-on-roblox-2021_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/reddit-roblox-lumber-tycoon-2-money-hack_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/hack-para-roblox-febrero-2021_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/roblox-free-robux-by-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-roblox-gidt-cards_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/roblox-com-www_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/cheat-engine-using-roblox-jailbreak_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/how-to-get-free-coins-in-minecraft_GM479516143.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/hack-coin-master-apk-32_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021-download_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/discord-servers-that-give-free-robux_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/free-hair-roblox_GM431946152.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/coin-master-card-collection-hack-2021_GM406889139.pdf
    • http://www.area-tlc.com/public/ckfinder/userfiles/files/does-coin-master-hack-work_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000306e.bin
1d385f1eadd79f5b72c527c83a7da8f82afcbd0066f26b27cc3d8aff4e396f1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x306E 21852 bytes
font_01_sfnt_off000060c9.bin
6867c649e86b0112b151b21a7c6e05f927bba7a062bba3a3a816d8ba792f1890
pdf-font-stream PDF embedded font (sfnt) at offset 0x60C9 19124 bytes