Malicious PDF — malware analysis report

Static analysis result for SHA-256 329137583603fe0e…

MALICIOUS

PDF

46.2 KB Created: 2021-06-04 01:01:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1fa063deb6bfecfeba73c8652b172b9c SHA-1: 36ad5353f772e22795ff4f6bab75c7bd537a770f SHA-256: 329137583603fe0ef4b51dec064f5a6e12b7a7486edb7b19fe2e0d7da03bbe3a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites that promise game hacks and free in-game currency, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or potentially malicious download attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/406889139/coin-master-free-spins-links-2021-game-hack PDF link annotation
    • http://lib.vipklh.ru/repository/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-without-human-verification_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
stream_004_off0000500a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x500A 27116 bytes
SHA-256: e44f4615f2d51221aeef4ecf4c79b5bfd8d9b88498bb70bf1a793b7df1ce0006
font_01_sfnt_off00008d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D96 19784 bytes
SHA-256: 52ccdddb3421a676568b5a64b225da64cfd7cfefe739c109a0b3fc8a2462147a

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