Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc5010b94cfe72e…

MALICIOUS

PDF

36.0 KB Created: 2021-06-29 09:18:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 468dcf9afe92353565cee02d6e7bf885 SHA-1: f207c84c5b8a5f9631c8583be56fcd52fc4e5615 SHA-256: edc5010b94cfe72ebd8ca3d4e0583ff60644878efc959638a4a8bd6adacdc2be
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are related to obtaining free Robux or game hacks, indicating a likely phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence. The presence of external URIs and a link farm suggests an attempt to redirect users to potentially malicious websites or download further payloads.

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-do-u-get-free-robux-on-roblox-2021-game-hack
    • http://perpus.poltekeskupang.ac.id/repository/free-coins-coin-master-today_GM406889139.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-robux-no-verification_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-free-download-windows_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/minecraft-windows-10-key-free_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id//repository/microsoft-roblox_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-app-no-human-verification_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/changer-la-valeur-dun-nombre-sur-roblox-cheat-engine_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/does-roblox-track-the-ip-of-the-hacker_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/sign-up-for-free-robux_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/c-roblox-exploit-free_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-cheat-aimbot_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/roblox-adopt-me-money-cheat_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-into-walls-in-roblox-jailbreak_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id//repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/minecraft-bedrock-edition-pc-free_GM479516143.pdf
    • http://perpus.poltekeskupang.ac.id/repository/get-robux-for-freecom-on-computrt-2021_GM431946152.pdf
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-robux-in-roblox-no-download_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031f4.bin
19afc8ebb836455ba1a59c2f9af81cebaace7699b3c0e992172b2d03999d93c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31F4 23068 bytes
font_01_sfnt_off000065cf.bin
9ae61c19488d7fe68e3f972e98f21d5191fe12f15184de4901d20b3bd333c070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65CF 19628 bytes

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