Malicious PDF — malware analysis report

Static analysis result for SHA-256 393660a67e143412…

MALICIOUS

PDF

35.4 KB Created: 2021-06-18 23:34:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d46b7ab15760aa5a59450df8826a4651 SHA-1: e98122affff4802ffe35e20f00b465f3f613ec23 SHA-256: 393660a67e143412a3c0d77af7e7460b9a0cbb26d207932cdfd029a161a02d47
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains numerous links to external resources, many of which are SEO-optimized PDFs related to game cheats and currency. The primary URL, http://netcdn.co/app/431946152/how-to-hack-assasssain-in-roblox-youtube-game-hack, suggests a lure for users seeking exploits or hacks. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent behind the 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/how-to-hack-assasssain-in-roblox-youtube-game-hack
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/name-change-client-roblox-free_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-followers-without-verification_GM835599320.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-robux-giveiaway-live_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-in-2021_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/roblox-cheat-furk_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/ooby-give-you-free-robux_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-100-robux_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-robux-card-codes-not-expired-2021_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-minecraft-premium-account_GM479516143.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/promo-codes-for-free-robux_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new_GM406889139.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/boku-no-roblox-free-spin-hack_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/how-to-get-free-limiteds-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/the-plaza-roblox-money-cheat_GM431946152.pdf
    • https://elearning.mtsn1balangan.sch.id/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003254.bin
49a072f3916ab1ffaafa25e00b36927ea93874274daa655fa834e0011de4b020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3254 22496 bytes
font_01_sfnt_off00006475.bin
3510883868c29189a5cb656befc0699cea1643c56f28b822553510f07028c279		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6475 19344 bytes

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