Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcfbe59fe51c58a…

MALICIOUS

PDF

48.3 KB Created: 2021-05-17 06:11:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 13b7b75e0a185d1a378e5ac9f71070d3 SHA-1: 26b6006eefd95a0b9f6f5fd9ad1d4d6fe0b961a0 SHA-256: 4fcfbe59fe51c58a6880d185a8aa158c4e276264f8bf3c2aa3e25d090529b479
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and a call-to-action phrase, suggesting a phishing attempt to lure users to a malicious URL for game-related cheats. The ML classifier flagged this PDF with a high probability of being malicious. While no scripts were directly extracted, the PDF structure and embedded URI indicate a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/406889139/get-coin-master-cards-free-game-hack
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/gain-robux_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-daily-spin-link-app_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/spins-gratis-coin-master-hoy_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-download-apk_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-fly-hack_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/get-free-robux-today_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-do-you-get-roebucks-for-free_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-hack-game_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-accounts-that-work_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/kachifpro_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-website_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coins-coin-master-hack_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-for-kids-no-verification_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-spins-apk-download_GM406889139.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/can-u-get-free-robux_GM431946152.pdf
    • https://www.charnwood.staffs.sch.uk/admin/ckfinder/userfiles/files/minecraft-free-school_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004df7.bin
40e40ab45849f531762ee1ef775028395a8285b4a9556975a17d86b138d443b8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DF7 28668 bytes
font_01_sfnt_off0000906e.bin
582708023ba280d4d50e04d3196ed4a98a24323596270ce5a55f31618faa5208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x906E 3460 bytes
font_02_sfnt_off00009bdb.bin
c9491de8ff5e3efb4dd1a859a376280f1f5e802e9ec7aa153607e57d5f63d660		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BDB 17884 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.