Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbcd9fbcb55fb3ba…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 22:29:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 173d3d88d28e4beb24a48560e1c62dde SHA-1: 52857af51f72ab983367499f3cacf8b0baea05a3 SHA-256: fbcd9fbcb55fb3ba7c282200da156ff0c1c8850f113582ea1e7e8d165e064a13
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 entice users into clicking embedded URLs. The primary URL, http://netcdn.tw/app/431946152/how-to-hack-beach-simulator-in-roblox-game-hack, and numerous others hosted on mtsn-baranti.com, likely lead to malicious websites or the download of further malware. The ML classifier strongly indicates malicious intent, and the heuristic firings confirm the use of a redirector lure.

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.tw/app/431946152/how-to-hack-beach-simulator-in-roblox-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/synapse-hack-roblox-anti-ban_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-promo-codes-for-roblox-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-spin-rewards_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/yyoutube-robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/bit-ly-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-password-hacker-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-adopt-me-hack_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_off00002e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E41 21632 bytes
SHA-256: 6669feafbfefb35ad14919bdc2a6c4c151a6e6a48b64a63919c92daa855423b6
font_01_sfnt_off00005d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9D 19424 bytes
SHA-256: bae39ddf68f46939ebfe40489bdb873a44440ccb81839f1459cd2db3781cdbd5

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