Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3494fd5e9b5c84f…

MALICIOUS

PDF

49.3 KB Created: 2021-06-02 15:07:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4bb2e5cdde4bfac819224ffda83b0264 SHA-1: d0b57cafa5062919c391f76b77d8e5b08168b580 SHA-256: d3494fd5e9b5c84f8cc6b0c7b9769880b2f9daee71766f971cb1fa7680d5643e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency, directing users to a malicious URL. This URL is identified as a known malicious redirector, indicating a phishing or scam attempt. The document's structure and embedded links strongly suggest a social engineering tactic to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/how-to-get-free-infinite-robux-in-roblox-game-hack In PDF document text
    • http://nebraskahospitalityhalloffame.com/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-spins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-skin-packs_GM479516143.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_004_off0000524d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x524D 26632 bytes
SHA-256: cfb8ffcfea6eff75f80a8faf97d88b8e819052df000ab36b32311679766804a2
font_01_sfnt_off0000905b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x905B 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6D 18476 bytes
SHA-256: f03159ce5ee775331bc497ff3cf6162a3d56cf87df7546e7d6a828dd5c986ec5

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