Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dc54db469b65c4a…

MALICIOUS

PDF

36.0 KB Created: 2021-06-28 03:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4d23a2194281bb823374a57751e99060 SHA-1: d68ccdd71aeaab4bd6f47d34eedb4d40ab7f547e SHA-256: 2dc54db469b65c4a70a423c4b8c73b7a225bb9a55c21d9cae5763949677bf888
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are related to game cheats and hacks for popular games like Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm designed to attract users searching for cheats. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to download or access malicious content via these links.

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-roblox-super-power-simulator-game-hack
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-get-a-free-skin-in-strucid-roblox_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-meep-city_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/hack-robux-codes_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/granny-bring-all-item-hack-roblox_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-cheats-tablet_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-tiktok-video_GM835599320.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-account-stealing-hack-by-kingtennisbal-deutsch_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-cards-2021_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/easy-roblox-today_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/get-free-robux_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-switch_GM479516143.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-easy-and-fast_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/minecraft-hacks-wurst_GM479516143.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-currency-hack-lua-script_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-game-2021_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-attack-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003601.bin
b420d98a5b46f50433ecdb7877f148cd66534c8637610fc51174a3f3b59aa6af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3601 21760 bytes
font_01_sfnt_off000065b5.bin
a22572e06aae17530596ef0c4e0d3c275b74e413ac479e4e8349b0267485973c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B5 19768 bytes

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