Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c0300618d4c98d…

MALICIOUS

PDF

41.4 KB Created: 2021-05-16 04:00:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 98e4458d7ff8c02a272723272002cc1e SHA-1: d1a43875c856523b769c8d1e22ef3690a605d777 SHA-256: e4c0300618d4c98d183a8ecfac696b3c0da1b1a5bd04bbfe2d82328d76936334
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free Robux' or game hacks. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring users to click on these deceptive links, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/blox-fish-free-robux-game-hack In PDF document text
    • http://www.taxiaparis.fr/images/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/instantrobux_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/roblox-images_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/make-robux_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://www.taxiaparis.fr/images/do-robux-generators-work_GM431946152.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_off000046f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F2 24708 bytes
SHA-256: 726a15a689bf97b69f9f027c8cdcaa71b0a87f29f80d932324ebaffdb2417b86
font_01_sfnt_off00007f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F23 18376 bytes
SHA-256: 833bfe47d36e77ffff594e1188eeee77c72f4d78f65cd820fb361f10e8c51563

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