Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb535982f58e8a9…

MALICIOUS

PDF

34.1 KB Created: 2021-07-08 17:46:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fdfe5dc0653e1e754e1ba3149ddd970a SHA-1: 5dd274f88934839652267ce4c02403df0b643ce4 SHA-256: 6eb535982f58e8a953f399511ce6db525363f581eb5ae7fd3a5e00adbaf9ec26
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and free currency, directing users to a known malicious redirector URL. The embedded content and numerous linked URLs suggest an attempt to drive traffic to potentially malicious websites or download further payloads. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a social engineering attack.

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-robux-for-free-2021-game-hack In PDF document text
    • https://www.wannon.tw/upload/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-robux-tutorial_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/how-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/how-to-hack-somebody-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/roblox-free-mouse_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/roblox-toolbox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-3d-roblox-gun-models_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-roblox-game-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/hack-roblox-espaol-elements_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/roblox-land-free-robux_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
font_00_sfnt_off00002d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D65 22224 bytes
SHA-256: 930d84bc543263df802a7f01e5d0f59006486dba9a9c959ca4bdc2a7bef5ca25
font_01_sfnt_off00005ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 19384 bytes
SHA-256: de28a66561f48ef455a7e74c3d38ef737581a70ecb9f32033b07134a01356d69

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