Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e61516bad115be…

MALICIOUS

PDF

35.2 KB Created: 2021-06-30 06:24:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c8ed0da454fa8278af8233f7b38e52aa SHA-1: f893798c6db199abd72eaccdaa7c8d0026793af9 SHA-256: 70e61516bad115bea5fbcc45fd012ec2ef246c9399fa75de6470cef10e35a6db
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are presented as game hacks or cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting a coordinated effort to direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

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/dll-hacks-for-roblox-game-hack PDF link annotation
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-hack-xenox_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-hack-2021-deutsch_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-non-virus-recorder-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/obby-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-hack-client-2021-download_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/how-to-get-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-roblox-gift-card-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-using-html-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/best-free-roblox-screen-recorder_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mismiftahulumam.sch.id/__statics/gudangsoal/files/lua-c-free-camera-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3277 22524 bytes
SHA-256: c64223e72729c2ef1fab8275ecb1b8f3e3459914e422ce16adeb703e77b9a271
font_01_sfnt_off000064c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 18988 bytes
SHA-256: 2f6bd5451dc5ae84a5072865796f93d952c9cf51772a6c6af5b570c49982cded

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