Malicious PDF — malware analysis report

Static analysis result for SHA-256 692db16f57e8b899…

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 21:36:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e90fa1a8feb96babbf95add68b643b6 SHA-1: 89e7bee160c6131e204f68359b35ca28aa655926 SHA-256: 692db16f57e8b899cf3c8fd9ecfb31323e30f989faa75be6ed502dd0d9983480
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/479516143/free-minecraft-bedrock-server-hosting-24-7-game-hack PDF link annotation
    • http://rsudtenriawarubone.com/perpustakaan//repository/no-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/getrobux-come_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/cool-face-roblox-free_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/games-in-roblox-that-give-you-free-items_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://rsudtenriawarubone.com/perpustakaan//repository/coin-master-daily-free-coins-link_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_off00003580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3580 22404 bytes
SHA-256: e0db03cca4e188a2d8d9a4d2ef34619f619b40105923c5b19bf8a48cf804c5fa
font_01_sfnt_off000066cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CB 18916 bytes
SHA-256: a6a992a3af0fcbb09375a58681f9855b6f4353f5ebe3ed4f439c39f2227389ef

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