Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c040d84593cf1c4…

MALICIOUS

PDF

37.2 KB Created: 2021-06-28 00:04:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a75e01fa7b01a32a0cbb9b38a1e5dd9a SHA-1: bbb656fa37a3a8cce61e7de1ef3123c61ee98981 SHA-256: 7c040d84593cf1c44caad75300413c4c789924c7b98ba28cd8b4623a1bf70acf
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs, forming a link farm designed to direct users to sites offering game-related cheats and generators. The document body and heuristics indicate a lure for 'free Robux' and similar in-game items, which is a common tactic for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, supporting the assessment that it is part of a malicious campaign.

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/free-robux-generator-2021-working-downalod-no-downlaod-oddsfuspanish-translate-game-hack
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-minecraft-realm-codes_GM479516143.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/pokemon-go-free-remote-raid-pass-march-2021_GM1094591345.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-a-lot-of-robux_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/doctor-louie-roblox_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-a-free-dominus-hat-on-roblox-2021_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/change-roblox-username-free_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/roblox-cheats-deutsch_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-hacks-that-actually-work_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/roblox-card-with-free-virtual-item_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-free-spin-generator-without-human-verification_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/roblox-script-hack_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/http-appsmob-info-coin-master-hack_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-redeem-code-free_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/how-to-get-2021-robux-for-free_GM431946152.pdf
    • http://perpustakaan.stikeshamzar.ac.id/repository/coin-master-hacks-that-work_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000339d.bin
2e676f07981f3e4967a2c97ed0ac1ac40f92d7c9a5968935bd56829a859d9a07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x339D 22964 bytes
font_01_sfnt_off0000679c.bin
4410d302ef4f3dabdfa9a3dc372a0398dbf62e60e6687c2a4929a99088e9be7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679C 20632 bytes

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