Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcdb55de6721f04…

MALICIOUS

PDF

34.9 KB Created: 2021-06-30 07:13:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 2cc2597ed6ae7fa49dc48d3f3bf33704 SHA-1: eebdfcc77decce34aa4da4037388a2c777ed39c5 SHA-256: 1dcdb55de6721f04120e1b82a7f8d2f23d3cf5e3f66df6649036000a042c06d4
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/1x1x1x1-hack-roblox-game-hack In PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/cosas-free-en-roblox_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/get-a-free-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-online-games-similar-to-roblox_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-royale-high-school-hacks-de-todo-tipo_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-hacks-4-free_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/galaxy-roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/roblox-executor-free-2021-roblox_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-roblox-audio-sounds-songs-chill-bill_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/coin-master-unlimited-spin-hack-mod-apk_GM406889139.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-roblox-games-without-password_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://diendientuvn.com/public/upload/files/free-tiktok-followers-without-verification_GM835599320.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
font_00_sfnt_off00003120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3120 22864 bytes
SHA-256: 6af420c1e97f1b4a0f3a1285ece2ee1102e453b7985f067b56f7e62b1177ab35
font_01_sfnt_off00006422.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6422 18760 bytes
SHA-256: c8d7da45f327eb482417e887bb2481db81b45c5b064c70c68422ba39f203de23