Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc7f67941949ac1…

MALICIOUS

PDF

42.3 KB Created: 2021-05-12 19:30:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-30
MD5: c5379dbe57bf26c27d68248144bd9360 SHA-1: 0ae6046d91d9d4d2aab44f16b7e67767513ee629 SHA-256: 1dc7f67941949ac1faea90e945f4e47e68d3a2e08f10224e6c756363d2c40d33
160 Risk Score

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/free-robux-thumbnail-game-hack In PDF document text
    • http://dana1157.com/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/robux-sign_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/i-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/client-minecraft_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/roblox-free-login_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_off00004725.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4725 25564 bytes
SHA-256: 06f62aa98a1178439d2ecfdc3f50602841396d8c5a2354700b5bc29396fcee39
font_01_sfnt_off00008197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8197 18864 bytes
SHA-256: c969eb26f29950990ddccbf0eeab0a7af3119d1c9c7ebc0fee97903357bc58cd