Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5eed48bd156ad8…

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 15:05:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0269cae9133a2eab45a280417f78ec35 SHA-1: eb1b7275784dd036e1019d4ab941ac375ac025e9 SHA-256: 6b5eed48bd156ad8bd32384af91d7cf4f9fe6212df47285267e44512f967b53b
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 0.9971

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/479516143/free-minecraft-severs-game-hack PDF link annotation
    • http://library.ft.upnvj.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/is-coin-master-hacks-safe_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-gratis_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ft.upnvj.ac.id/repository/how-to-hack-coin-master_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
stream_003_off00004919.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4919 25804 bytes
SHA-256: 1193c33d31d60b72e22ea7c142e93f8ecdce304ba1e78358043169136d8778b9
font_01_sfnt_off00008424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8424 17684 bytes
SHA-256: 68c7633e4f8f66aed6097c93c8f3d8629ce8342c97eef3b0bb64f8019df65cc6

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