Malicious PDF — malware analysis report

Static analysis result for SHA-256 2340fb98eadd446f…

MALICIOUS

PDF

34.8 KB Created: 2021-06-26 03:58:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c03dc8aa738c0d75e5c4b8cf26e393d7 SHA-1: 75dcee4feeecc61d7103c098cbe62c0dee64d48a SHA-256: 2340fb98eadd446f84967a47f867bae401f4ac47a871903b193c70124b73f65b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified as a link farm, all promoting free in-game currency or items for games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a call-to-action button lure further support a malicious intent. The document likely serves as a lure to direct users to phishing or malware distribution sites.

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/robux-free-site-game-hack
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-your-hacked-account-back-on-roblox-2021_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-no-offers_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-obby-gives-free-robux-with-game-link_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/is-roblox-free-on-computer_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-spin-coin-master-game_GM406889139.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-free-robux-with-no-verification_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-human-verification_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-minecraft-worlds_GM479516143.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/secrcet-free-roblox-hats_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-fast-speed-hack_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/exosite-roblox-hack_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-com-2021_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-account-info_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-codes-to-hack_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-without-downloading-apps_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-no-surveys-no-human-verifacation-2021-2021_GM431946152.pdf
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-hack-yourself-up-in-a-group-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030ba.bin
41de754a40d53d71b3376c7791502705fd17a42a50eb35a072a09bb0adb0eba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30BA 22580 bytes
font_01_sfnt_off00006331.bin
8c87ca71e13ab49aef9417be001d718e1fe64815f751c98faa10d2c12af0c629		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6331 18940 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.