Malicious PDF — malware analysis report

Static analysis result for SHA-256 2626406e17f2338e…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 18:32:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9a45e7507931ade5b174efe64fc7e016 SHA-1: ba013879500ea322590fea1762114a6fc6425e6c SHA-256: 2626406e17f2338e8f3c8641943ccd6edb900389752d47a951c20b8174059e71
102 Risk Score

Malware Insights

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

The PDF document contains numerous links to external websites, many of which are SEO-optimized pages promising free in-game currency or cheats for popular games. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests a phishing or scamming attempt. The document's primary purpose appears to be directing users to potentially malicious or scam-related websites.

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.tw/app/406889139/coin-master-free-spins-link-2021-march-game-hack
    • https://mtsn4kukar.com/__statics/gudangsoal/files/can-you-get-free-robux-on-roblox_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-make-a-hacked-private-server-on-roblox_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-phantom-forces-cheats-aimbot_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/tiktok-free-key-code_GM835599320.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-coin-link-for-coin-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/good-free-clothes-on-roblox_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/best-minecraft-hacked-client-2021_GM479516143.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-spins-link-october-2021_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-coins-today_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/spin-free-coin-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-minecraft-videos_GM479516143.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/robux-online_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins_GM406889139.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-free-blonde-hair_GM431946152.pdf
    • https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-com-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003008.bin
cc8e051b5a01eb51d2b691fac78c8b14e71eb55dce370887160d33c34969a301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3008 22212 bytes
font_01_sfnt_off0000612b.bin
9c5f3dff50ed497e4add18bd6910b8e1612dc8dbba3136152b5d734ea2e86e3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 18912 bytes

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