Malicious PDF — malware analysis report

Static analysis result for SHA-256 89acc7fba1671acd…

MALICIOUS

PDF

33.5 KB Created: 2021-06-25 01:37:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8d3bf0fa86c028813fcbe4749aac3db7 SHA-1: 897b60f4990843b73c0c6bae2ac5fa33b8b5acd3 SHA-256: 89acc7fba1671acd13946069efce757f3a354ef04d583da578c0b3ac5d667c1c
82 Risk Score

Malware Insights

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

This PDF document contains multiple links and a lure for 'free Robux hacks', indicating a social engineering attempt to trick users into visiting malicious websites. The primary link, http://netcdn.co/app/431946152/pastebin-robux-hacks-for-free-game-hack, is presented as a call-to-action, likely leading to a download or phishing page. The ML classifier strongly flagged this PDF as malicious.

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/pastebin-robux-hacks-for-free-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/a-hack-script-for-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-to-join-anyone-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-roblox-military-script-executor-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-executors-for-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/dowload-free-robux-hack-for-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-pe-mod-menu_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hack-ohne-handynummer_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_off00002d6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D6E 21772 bytes
SHA-256: 3ad596730d005fd35029028c32c71987de9ec6e9cb48e6946be04b74651c78ec
font_01_sfnt_off00005d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3F 19264 bytes
SHA-256: bf2539e391bb81b97a3258519d6552bbab56ba11d46679305d4de92841b31daf

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