Malicious PDF — malware analysis report

Static analysis result for SHA-256 070a05afb13127f1…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 10:53:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 37bf05d92fb26bf3995424d278e52f9e SHA-1: 6a9bcbe497fe49e6efa9840732b1fb3df5ca3a7a SHA-256: 070a05afb13127f1ca51a8dfb8f3d8578c4a1ba4923d34fd356db7e36bec1438
102 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, many of which are structured as SEO-optimized links pointing to game-related cheats and hacks. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly suggests maliciousness. The document body also contains a direct link to 'netcdn.co', likely serving as a download lure.

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/406889139/free-coins-coin-master-link-game-hack
    • http://opac.ekonomi.up45.ac.id/repository/je-cheat-dans-roblox-4-000-000-millions-de-robux_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-coin-master-cheats_GM406889139.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-discord-servers_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/how-to-get-free-robux-on-a-computer_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://opac.ekonomi.up45.ac.id/repository/natevang-free-roblox-hacks_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • http://opac.ekonomi.up45.ac.id/repository/how-i-get-robux-free_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-instant-catalog-item-roblox-2021_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/veil-free-download-roblox_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/minecraft-hacker-skin_GM479516143.pdf
    • http://opac.ekonomi.up45.ac.id/repository/promo-codes-hack-on-roblox-gives-free-robux-2021_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/robux-free-gift-card_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdf
    • http://opac.ekonomi.up45.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-spin-hack-coin-master-2021_GM406889139.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-robux-for-free_GM431946152.pdf
    • http://opac.ekonomi.up45.ac.id/repository/free-spins-on-coin-masters_GM406889139.pdf
    • http://opac.ekonomi.up45.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003263.bin
e78b9361d2269d8fa6d7ac2fb8a2b68227d19f2fb8ccfa815a77e01cc8969379		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3263 22564 bytes
font_01_sfnt_off000064af.bin
b0fd03f2280421e1c8ba538a35ec3a9afcfe64ddb22ef6ef66156561f264a38b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AF 18168 bytes

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