Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea24cf04c165eee7…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 00:35:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ab3a1f4b7357509a899d59f3b0790047 SHA-1: c8f606e180163c7da145b50a349de9e902a22485 SHA-256: ea24cf04c165eee75eaa3508d23288c59f526ddf404cd7fe7a9232aa95391d50
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs that lead to websites offering game hacks and cheats, indicating a lure for users to download potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm further supports a malicious intent. No scripts were extracted, but the overall structure and content point to 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.tw/app/479516143/minecraft-tower-defense-hacked-game-hack
    • http://ellobo.com.ua/ckfinder/userfiles/files/roblox-free-robux-hack-code_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-domnis-rex-and-messor-roblox-youtube_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-stuff-on-roblox-2021-on-phone_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/critical-strike-hacks-roblox_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/roblox-e-free_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/2021-february-roblox-noclip-hack-for-prison-life_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/minecraft-story-mode-free_GM479516143.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-spin-rewards_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-version-download_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-spins-and-coins-coin-master-link-2021_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-a-hacked-account-back-on-roblox_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/paragon-hack-roblox_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-birthday-glitch_GM431946152.pdf
    • http://ellobo.com.ua/ckfinder/userfiles/files/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d2.bin
cb505ba57b6906085421739b1d594204cf067dd41c88ed0f95b9be9a1cd073d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x30D2 22092 bytes
font_01_sfnt_off0000615d.bin
8ef55fb4d9ba038590cd99f97770fa3f244966affa92085fda601291346fb9e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x615D 18672 bytes