Malicious PDF — malware analysis report

Static analysis result for SHA-256 191142871da0785a…

MALICIOUS

PDF

44.8 KB Created: 2021-05-14 18:31:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: af3397edd12706b7e9777eb0bb47974d SHA-1: c000b8f9feff1d3481278aa7ee5e9414d8c765c6 SHA-256: 191142871da0785aad5ed4d28dd665587ea7644d4d2df15b408f63580d1ee157
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/coin-master-free-spins-link-download-game-hack In PDF document text
    • http://cadcam.no/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://cadcam.no/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://cadcam.no/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://cadcam.no/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://cadcam.no/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://cadcam.no/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/500-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cadcam.no/images/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cadcam.no/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAE 24144 bytes
SHA-256: ca08e4c456ba726b9af0d79792339da912e68d4e473b1b650afa70a3e72e1024
font_01_sfnt_off0000819e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B50 18636 bytes
SHA-256: e0ee4d28e9fbd90893640acb023fdb3433a7d18e360fd79b0a1965f7934d0c46