Malicious PDF — malware analysis report

Static analysis result for SHA-256 e719767d28934c24…

MALICIOUS

PDF

41.6 KB Created: 2021-05-15 02:36:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 374e083c016f216c5a982d60494f9b39 SHA-1: 4138ea92699e06fcc9b45f4b30115a563b6d1d0f SHA-256: e719767d28934c240531fd3f706cfbf1e0532f24fcbc0a3ff53a3b390f85f8b6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to external resources related to game hacks and free in-game currency, suggesting a lure for users interested in such topics. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the 'ML_NYX_PDF_MALICIOUS' flag strongly suggests malicious intent. The presence of a 'download button' lure further supports the idea that the document is designed to trick users into navigating to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/robux-com-free-game-hack
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/hacks-for-roblox-prison-life_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-card-collection-hack_GM406889139.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link-2021_GM406889139.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/robux-hack-me_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-tool-hack_GM406889139.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-hack_GM406889139.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/minecraft-world-free-download_GM479516143.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/how-to-hack-someones-minecraft-account_GM479516143.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/cute-free-stuff-on-roblox_GM431946152.pdf
    • https://elearning.mtsn1tapteng.sch.id/__statics/gudangsoal/files/100-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ab.bin
f581a5a5e4b7ca5fa448e732ee22e0e9f964ed1a952717d8056ea05a1dc5e49b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AB 24668 bytes
font_01_sfnt_off0000804d.bin
15a0db03ecad41b32ad15729058012b5ee1d917146ec7af3e780186d41394abc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x804D 18276 bytes

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