Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebde7353eec91ca1…

MALICIOUS

PDF

33.5 KB Created: 2021-07-08 05:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 96c3ae3feb6b4dcf748e8b95490c01f1 SHA-1: f0675b0a58af4491fd07d4668162651b0b3702af SHA-256: ebde7353eec91ca10a6ddcc415101bc74fcb9205b096deca5bfb2bbb60aa9d74
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game hacks and cheats. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download button' heuristic further suggests a user-driven download attempt. The primary goal appears to be directing users to external sites that may host malware or facilitate scams.

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/master-coin-free-link-game-hack
    • http://lib-smansumsel.sch.id/repository/como-descargar-hack-para-roblox-de-robux_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/free-robux-no-scam_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/games-that-give-free-robux_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/top-best-free-stuff-on-roblox-2021_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-pro-gamers_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/free-robux-games_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/hack-my-game-xyz-coin-master_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/how-to-hack-coin-master_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/top-ten-roblox-hacks_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/free-rich-roblox-account-2021_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-youthnow_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/games-that-give-you-free-robux_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/how-you-get-free-robux_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/adidas-t-shirt-for-roblox-free_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/lots-of-robux_GM431946152.pdf
    • http://lib-smansumsel.sch.id/repository/100-free-tiktok-likes_GM835599320.pdf
    • http://lib-smansumsel.sch.id/repository/free-coin-master-coins_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-download_GM406889139.pdf
    • http://lib-smansumsel.sch.id/repository/speed-hack-roblox-prison-life_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e04.bin
c18681fe12d42397339f5976d572921382099605862268b59ae6ba64e9a6ec9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E04 22676 bytes
font_01_sfnt_off0000607e.bin
e450dc423028427b486fcd2b5a338852c4e54ca04eb5a94dcf465bc91229717c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607E 18168 bytes

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