Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaddbba9eb86f64c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 10:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 94bab78b969b35865ab3999296c22c72 SHA-1: 4db08e11cef3d87dd44850c339b3a7f13f45ad47 SHA-256: eaddbba9eb86f64c7ce15de469b034e31e528e7df0f567f6167802514ad6f375
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, suggesting a lure for downloading potentially malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous links to game hacks indicates a phishing or malware distribution attempt. No scripts were extracted, but the overall structure points to 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/479516143/minecraft-games-online-free-no-download-game-hack In PDF document text
    • http://library.acehresearch.org/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/hack-my-roblox-account-freee-no-downloads_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/check-cashed-v5-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-how-to-hack-games-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-how-to-get-free-ranks_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/bunny-face-mask-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/does-inspect-elements-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-codew_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-robux-on-roblox-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/unknown-cheats-roblox-speed-hack_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_off00003082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3082 22152 bytes
SHA-256: 9be9d086cb05ce4cca85b6d5205f65643bdfd728b8d0d12b533038bd60bc7853
font_01_sfnt_off00006196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6196 18840 bytes
SHA-256: 0f63a3180c461c096085b6d31a5d28a282e0ae722758aa9b018515a408144b72

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