Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebbd5bae7da26640…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 22:06:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bbda89e6dd7cb70092c3ab0473f390e3 SHA-1: ad4507d4df4e36b9b826fb78f8ce3608d5178b91 SHA-256: ebbd5bae7da26640ac6cae71640d218b747d391d8d80b1e670002a64d04ba914
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacking, directing users to a malicious redirector URL. This infrastructure is designed to lead users to further malicious content, likely for credential harvesting or malware delivery. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or 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.co/app/431946152/how-to-you-hack-on-roblox-assassin-game-hack In PDF document text
    • https://beauty911.tw/upload/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/for-creeper-hack-roblox_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/youtube-how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/pubg-uc-lucky-spin_GM1330123889.pdfIn PDF document text
    • https://beauty911.tw/upload/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/redeem-roblox-virtual-item-free_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/roblox-redline-hack_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/xray-hack_GM479516143.pdfIn PDF document text
    • https://beauty911.tw/upload/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://beauty911.tw/upload/files/how-to-get-a-free-wings-in-roblox_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_off00002fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAD 22788 bytes
SHA-256: b6990c9d6082e95590ba19bd9a5203f8b3a95da0bf203a86e6835a6faa288949
font_01_sfnt_off000062e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E1 19244 bytes
SHA-256: 11d829169c396177c5ce18c4c42d44f4cf0d65a9f00ecc45636e0f71e90ec2ed

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