Malicious PDF — malware analysis report

Static analysis result for SHA-256 0443818bb1a8edd6…

MALICIOUS

PDF

35.4 KB Created: 2021-06-20 15:43:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ed20dd88452cde2fcfdf10b920a313ca SHA-1: 7dba4fb465d74889377db5670e947c600553424f SHA-256: 0443818bb1a8edd6a4f19207ca8a3479922d0bac2f3d4443b7ff1fb1121e6c86
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The primary link, http://netcdn.co/app/431946152/fastbucks-me-robux-for-free-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for further malware delivery or credential harvesting.

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/fastbucks-me-robux-for-free-game-hack In PDF document text
    • http://dismarinamt.com.br/images/rbx-hut_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-do-i-hack-steam-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/hiw-to-get-free-robux-on-your-phone_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-download_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-to-hack-using-roblox-client-flying_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-robux-generator-no-survey-no-download-no-verification_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/fashion-frenzy-roblox-free_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-robux-no-apps-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://dismarinamt.com.br/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://dismarinamt.com.br/images/free-robux-cheatengine_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/simple-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dismarinamt.com.br/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.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_off00003228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3228 22808 bytes
SHA-256: 5ca2e967cc51a8d7c5c2dcc8d376946f8c7cd477e31860a2bc0377423420c89e
font_01_sfnt_off000064f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 19184 bytes
SHA-256: 94877313dfeb1e9b56ea0f78f48d6528dd4d33cc93017e23bfe32b04b82c379a

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