Malicious PDF — malware analysis report

Static analysis result for SHA-256 03e855301ddef304…

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 19:21:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f053a7c3623b494e243e53ca52388bbb SHA-1: 221559e3662a33679298b34c641d9d88b93b5bd5 SHA-256: 03e855301ddef30487d9863d96ccf77e056a784c903b1370e888c6e96dcdccb7
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/406889139/daily-free-spins-on-coin-master-game-hack PDF link annotation
    • http://perpustakaan.urindo.ac.id/repository/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/como-conseguir-robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
    • https://perpustakaan.urindo.ac.id/repository/5-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.urindo.ac.id/repository/play-coin-master-online-free_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_off00003266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3266 22772 bytes
SHA-256: 1ea3a6182460d02e61e97627027087fb88c0858bfa94b809c3aa15a8a20f7819
font_01_sfnt_off00006562.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6562 18596 bytes
SHA-256: aa492e242eac48f7948a24bc45da02f981899f459ecbb02c793d9ace75e48389

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