Malicious PDF — malware analysis report

Static analysis result for SHA-256 01eee173f0eef843…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 22:06:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 27bde59de9142853051aab7dbe57edd6 SHA-1: 0763a528d9ef1911ec22586015d5fe9a3ca5fd9a SHA-256: 01eee173f0eef8438fdc20f8f59765b614eca0fe4bc8d0c03be42842a4d182de
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document employs a lure related to game hacks and free in-game currency to entice users. It contains multiple embedded URLs pointing to similar content, suggesting a download or redirection attempt. The presence of a 'password-protected archive' heuristic indicates the document is likely part of a multi-stage attack designed to bypass security controls.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.online/app/431946152/free-roblox-groups-with-funds-game-hack PDF link annotation
    • http://www.js100.com/uploads/ckeditor/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/mcpe-client_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/get-robux-now_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/free-role-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-hack-mod-apk-android-1_GM406889139.pdfIn PDF document text
    • http://www.js100.com/uploads/ckeditor/files/coin-master-pc-hack-tool_GM406889139.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_off00004d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D50 28896 bytes
SHA-256: 37557d43c64fd6bc39314114fc151be9184aa50f1183ce3e701b43f5615d5342
font_01_sfnt_off00008cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF1 19028 bytes
SHA-256: 3400496694c4b95422a50533d9ab07e9ced2fd8b85931bd61225c3b69c3e3d7c

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