Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2f43be4990c742…

MALICIOUS

PDF

34.4 KB Created: 2021-06-25 19:21:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9c87deaa0beee30e27510d84b55db008 SHA-1: e91ce368e9018cc2619afe7508f3f48d23063faa SHA-256: 7e2f43be4990c742581674100a30eafe8f17384c7e8d7cfd941c78663669b591
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a primary focus on luring users with 'free generator' or 'game hack' themes. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous related URLs strongly indicate a phishing or scam attempt. The document likely exploits user interest in free in-game items or cheats to redirect them to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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 http://netcdn.co/app/431946152/gametest-roblox-com-free-obc-game-hack PDF link annotation
    • https://silvterie.com.br/images/ckfinder/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-coins-for-planet-master-game_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/buxblast-com-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/robux-free-co_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/tiktok-free-coins-apk_GM835599320.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/unlimited-robux_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/coin-master-hack-version-apk-download_GM406889139.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/roblox-what-day-is-restaurant-tycoon-2-coming-for-free_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/reddit-hack-roblox_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://silvterie.com.br/images/ckfinder/files/minecraft-pe-apk-download-free-015-0_GM479516143.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_off00003022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3022 22204 bytes
SHA-256: 73e3a6921ac257255f35c6cd5a03071af257c4ff119d545281671834ad027eaf
font_01_sfnt_off00006171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6171 19016 bytes
SHA-256: 4c7451f56df48f0a302798476f4504b8699d391b728339c294e80cd3c4d2d507