Malicious PDF — malware analysis report

Static analysis result for SHA-256 b59d43e5b3043c21…

MALICIOUS

PDF

33.8 KB Created: 2021-06-23 05:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 31801a6c200894adb4046bab01ddec82 SHA-1: ab647ca6fd49b539994d1c5e3e93722e62dbc122 SHA-256: b59d43e5b3043c21964d25036f6e66e3dc7551c5b9977efaeb2dd86c8df641fa
82 Risk Score

Malware Insights

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

This PDF document employs a game hack lure to trick users into visiting a malicious URL. The primary URL, http://netcdn.co/app/431946152/roblox-cheat-engine-god-script-sbo-game-hack, is flagged as a redirector for game hacks. The document's structure and embedded links suggest it is designed to deliver a second-stage payload, likely through the malicious URL.

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/roblox-cheat-engine-god-script-sbo-game-hack PDF link annotation
    • http://library.stembi.ac.id/repository/earn-free-robux-rbx-blaster_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-bundle-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/spinning-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-bleach-soul-of-end-hack_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-800-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/arsenal-roblox-hacker-report_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-dark-egg-on-raise-a-dragon-roblox_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/i-give-free-robux-for-get-my-clothes_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-make-clothes-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-money-on-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/can-you-charge-robux-if-you-are-free-user_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/https-nhelprobloxcom-hc-fre_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_off00002dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC4 21972 bytes
SHA-256: 0ba456d92afe6230243bb9edf1866b6bf15b25557d01bb007a00fe22db7406ae
font_01_sfnt_off00005e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E66 19228 bytes
SHA-256: 623cfb6ab21e208ec76b9fb414d5603632827f76319a015b951adbadd00845e8

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