Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f435515087972c…

MALICIOUS

PDF

48.0 KB Created: 2021-05-10 23:32:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: 574fc7088bace832c9e288e697c384b4 SHA-1: ec40263d551d0b2902d517b892c94aeba1f26d18 SHA-256: f2f435515087972cad0a10402a6155ba6a50e7eaefa89751838ce9851437b4c0
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-daily-free-spins-link-today-game-hack In PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://falconshipping-uae.com/userfiles/files/roblox-pics_GM431946152.pdfIn 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_off000048a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A0 31060 bytes
SHA-256: 87baff21642d53490b20b1583cff93e6bcd69ca7a14d781ac1d31c980657792b
font_01_sfnt_off00008cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF2 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off0000981b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981B 18652 bytes
SHA-256: b7acebacf47409c7f0f2932ba41e4c1dc120b4ef5280387cf9333091bd47b2e0

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