Malicious PDF — malware analysis report

Static analysis result for SHA-256 085a577b4ca6be1a…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 10:11:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d89688127b174692b4899754026aaccd SHA-1: f9aab6d1bbe2fd555f2b19fd9eeaa4e2e2870d52 SHA-256: 085a577b4ca6be1a85a44eedae34c154ae62f6fd9c458c5f578f76897fe01d48
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and hacks to entice users. It contains multiple links, including a critical redirector URL, http://netcdn.tw/app/406889139/free-spins-for-coin-master-game-hack, which is flagged as malicious. The document's structure and embedded links suggest it is designed to lead users to potentially harmful content or further malicious downloads.

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/free-spins-for-coin-master-game-hack In PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/free-mask-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/idenity-fraud-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/hack-roblox-ccount_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-cframe-cheat-sheet_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-btools-hack_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://akbidprimahusada.ac.id/elibrary/repository/roblox-2021-how-to-change-your-name-free_GM431946152.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary//repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://akbidprimahusada.ac.id/elibrary/repository/roblox-hack-game_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_off00003338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3338 22208 bytes
SHA-256: de09ba42a2ff5a4b8c6e94f73344f34e77d486620c554942b24c809d45ab5b96
font_01_sfnt_off00006447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6447 18176 bytes
SHA-256: 0b37b87f907bc50fa1e450587a0e1f43116f92b011bc5b47444974eee354eb2f

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