Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f41ebb2b56c2c66…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 23:38:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 027d5f79598af967f5cc521b9de3bac4 SHA-1: d28c85f60cbf2841cb8449ecd59b975cb8f9b820 SHA-256: 6f41ebb2b56c2c665a32fa463239ab918feedca2a4476e640dcf2ed3115c3554
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a 'free generator' or 'game hack' to trick users into clicking malicious links. The primary link, http://netcdn.tw/app/406889139/get-free-spins-on-coin-master-game-hack, is identified as belonging to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely leading to further malware download 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.tw/app/406889139/get-free-spins-on-coin-master-game-hack In PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-robux-23-02-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/logo-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-cb-hack_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-free-robux-form-inspect_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-your-hacked-roblox-account-back-without-email_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/earn-roblox_GM431946152.pdfIn PDF document text
    • http://www.my-travel.com.hk/upload/files/how-to-get-java-minecraft-free_GM479516143.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
stream_002_off00002f60.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F60 22864 bytes
SHA-256: 59b2db5c7eff38fcf339b979c7403ebb56063376ce34e0756cfa5b6df333a52d
font_01_sfnt_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 18176 bytes
SHA-256: c16df4cb6866c2276686c5aaa4a0cb78e61d49506a44cfdb7663fe8f5aebf96b

Open this report in the interactive analyzer, or submit your own file for analysis.