Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d52c0b37520147…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 16:52:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: afd1bccee188640649a2f87db2d21b90 SHA-1: d0aa4c80e582762ed34b839aaafe6dbb8f5d7093 SHA-256: 08d52c0b37520147dfe7d83f7571fcbfbe9e2006616d1abeae97ef44320b7536
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which are SEO-optimized and point to resources related to game cheats and hacks. The primary URL, http://netcdn.co/app/431946152/phoenix-backpack-roblox-free-game-hack, suggests a download lure. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, reinforcing the malicious intent to redirect users to potentially harmful content.

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/phoenix-backpack-roblox-free-game-hack
    • https://www.devries-group.de/images/coin-master-free-spin-game_GM406889139.pdf
    • https://www.devries-group.de/images/pokemon-go-free-download-version_GM1094591345.pdf
    • https://www.devries-group.de/images/games-that-give-free-robux_GM431946152.pdf
    • https://www.devries-group.de/images/hack-para-jailbreak-roblox-2021-dinero-infinito_GM431946152.pdf
    • https://www.devries-group.de/images/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdf
    • https://www.devries-group.de/images/free-headless-head-roblox_GM431946152.pdf
    • https://www.devries-group.de/images/coin-master-hack-mobile_GM406889139.pdf
    • https://www.devries-group.de/images/easy-cheat-to-get-more-money-on-roblox_GM431946152.pdf
    • https://www.devries-group.de/images/roblox-login-hack_GM431946152.pdf
    • https://www.devries-group.de/images/coin-master-card-link-free_GM406889139.pdf
    • https://www.devries-group.de/images/how-to-minecraft-for-free_GM479516143.pdf
    • https://www.devries-group.de/images/roblox-bloxburg-hack-game-guardian_GM431946152.pdf
    • https://www.devries-group.de/images/hackear-coin-master-2021_GM406889139.pdf
    • https://www.devries-group.de/images/roblox-script-executor-level-7-free-download_GM431946152.pdf
    • https://www.devries-group.de/images/coin-master-free-coins_GM406889139.pdf
    • https://www.devries-group.de/images/free-robux-no-verification-needed_GM431946152.pdf
    • https://www.devries-group.de/images/wwwroblox-hack-get-free-robux_GM431946152.pdf
    • https://www.devries-group.de/images/how-to-get-free-wood-in-tradelands-roblox_GM431946152.pdf
    • https://www.devries-group.de/images/how-to-give-robux-on-mobile_GM431946152.pdf
    • https://www.devries-group.de/images/minecraft-for-chromebook-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_off0000303d.bin
bfdf9a3f255db13345eafc0e01f6b8be3cb250060d2c3e6c819893bf87c614a1
pdf-font-stream PDF embedded font (sfnt) at offset 0x303D 22656 bytes
font_01_sfnt_off0000632b.bin
2b7dc2c36eb0035602b8412bffa1252e809ac02cbd571401b35015eb46e6d711
pdf-font-stream PDF embedded font (sfnt) at offset 0x632B 19436 bytes