Malicious PDF — malware analysis report

Static analysis result for SHA-256 0663dd31a59cbd70…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 05:06:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 15a506d29fbafa429473e392e5dff917 SHA-1: 5078451ca2aefbb666a89b4e1abd9219e35b7359 SHA-256: 0663dd31a59cbd70d2a8316181e0f0cdf05dbd760deeb727c755f2328429d23a
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 https://netcdn.xyz/app/431946152/earn-points-for-robux-game-hack PDF link annotation
    • http://fobh.net/userfiles/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-demon_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4C 28848 bytes
SHA-256: d339140774927c7a2a7caaee382272d2c58eddf2f93ab57b34d2a9d5a217f4a9
font_01_sfnt_off00008dcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DCF 18620 bytes
SHA-256: c017815f7eb6531c9e4acdde9d92c09258657893b573c7da0b65812d86d29b72

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