Malicious PDF — malware analysis report

Static analysis result for SHA-256 32acd54d03db033f…

MALICIOUS

PDF

37.6 KB Created: 2021-07-06 01:36:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 59c1d651e6f8062c93cbb43e2f9f7e10 SHA-1: 6e6243cc80a10ce8c2f436e7d3eaf4e3482d6a54 SHA-256: 32acd54d03db033f9186ee921061b382fa407a7e78e5968ce90a8ec13d67d818
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The primary lure URL is http://netcdn.tw/app/406889139/free-coin-master-spins-no-human-verification-game-hack. This indicates a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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-coin-master-spins-no-human-verification-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-roblox-account-checker_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/google-roblox-items-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-change-roblox-user-for-free_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/download-hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-field-of-battle-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-retail-tycoon-hack-save-game_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003104.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3104 23100 bytes
SHA-256: 39c22597a1d0c1d3d6dcbcdc7bfc34f939166517b1aad6dbd74e2de3d8948c38
font_01_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC7 18708 bytes
SHA-256: c7f92a388584b93aa789012e3279a4b9f567133a27d6099686bb264b3904500a

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