Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6e3f3ce5e80977c…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 05:48:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f98e0987b31f3c80854fd892fb5c803f SHA-1: dbd273793b16702b703b8181555a63077056b553 SHA-256: a6e3f3ce5e80977c2ae85080308407c7df2e576014e4b904cdabc5814acda59f
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.tw/app/431946152/how-to-hack-a-roblox-account-easy-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/how-to-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/e-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-no-scam-or-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/exploit-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/login-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-adopt-me-hack_GM431946152.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_off00002c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5F 22068 bytes
SHA-256: 4f45b8b74fad5a531e36f0670a2feb88498b1edbf0c8b70e58f2cd957df80012
font_01_sfnt_off00005d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4A 19244 bytes
SHA-256: 4dcbe17bebf2382ad99832b5327dd7065748ff6dacf6eb853322815bf961736f

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