Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2242643a043222…

MALICIOUS

PDF

35.1 KB Created: 2021-06-28 14:52:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7d15f652433c5955a631023a32884a4c SHA-1: fd3c881656d36a5ff88520d4116fc9bf985d6575 SHA-256: 4c2242643a04322205562fa0123e9e59d0624095a4b69fe1866c63e4c461f8ee
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/speed-simulator-hack-roblox-game-hack PDF link annotation
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/comment-avoir-un-wall-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/file-droper-roblox-hack_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/best-free-fps-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/hacker-destroza-la-ciudad-roblox-pokemon-gomiannn_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/roblox-treasure-quest-cheat_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/how-to-get-free-robux-download-2021_GM431946152.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/moon-active_GM406889139.pdfIn PDF document text
    • https://sinos.net/_common/admin/scripts/ckfinder/userfiles/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000315a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315A 22204 bytes
SHA-256: a58ed5470c69533448fb2b60f8f3937f6db2d946aa56a827a2bac6c872f04594
font_01_sfnt_off0000629c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 19632 bytes
SHA-256: 8f22b2ebb2be3e3d40391a1f3c8f7e10457595c759d0a6eb44b53b69478527d2

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