Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f527d4f26365df…

MALICIOUS

PDF

45.6 KB Created: 2021-05-14 04:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 342b28f1b52a862fcc67abae0e135ba5 SHA-1: 749c721b1a86fc2ab2f21bd5d2d0ac402b0f65e7 SHA-256: 56f527d4f26365df74bba196646bf2127ad8a35d3cd26bd4b8d22ff1b781cfd4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as generators for game currency or hacks. The document body and embedded URLs suggest a phishing or scam attempt, likely to lead users to malicious websites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing campaign.

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-without-email-game-hack In PDF document text
    • http://acp-institut.fr/images/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-youtube_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
stream_003_off00004cc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC4 28920 bytes
SHA-256: ba2d5bf4ed6478c119490976cf00e402d271bbbd878848c57dd9481f7095b902
font_01_sfnt_off00008d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D30 19328 bytes
SHA-256: 2bb545c14ce80967bc964a539ce1fba7d75b9199f0e299556cda79647f99e488

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