Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe0fbdedb7c606be…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 17:25:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1c1682e1394f4fddb3ecaadf3a0e3e52 SHA-1: ece8a4460f7566a9f5d5e0972f88028ea91fd2f6 SHA-256: fe0fbdedb7c606be80fe9a647922fe6a512ed87d6eac61c60ca10c3d9ea1019f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/how-to-get-free-robux-easy-hack-game-hack. This redirector is likely used to deliver a second-stage payload or phish for credentials. The document body and heuristics indicate a lure related to 'free generators' and 'game hacks', suggesting a social engineering tactic to entice users to click the malicious links.

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.tw/app/431946152/how-to-get-free-robux-easy-hack-game-hack In PDF document text
    • https://www.atrax.hr/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://atrax.hr/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/edm-reaper-free-robux_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/roblox-account-hacking-v3rmillion_GM431946152.pdfIn PDF document text
    • http://atrax.hr/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://www.atrax.hr/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://atrax.hr/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://atrax.hr/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.atrax.hr/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.atrax.hr/files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off00002f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4C 22748 bytes
SHA-256: 1984bae40170782341c8a568bd6a6b76d69da890ee59eacabfd6cec0445866b5
font_01_sfnt_off000061d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D3 19336 bytes
SHA-256: 78f916c03dd9b91bc5a9b0fe28cce5081736cfe4fe32979dd63f9f8a24f066e1

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