Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c5fdf787b301cd…

MALICIOUS

PDF

38.4 KB Created: 2021-07-05 22:28:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6bc261f5ad908d80ffde23d6f1ec2423 SHA-1: 223e9cdfd4704117f8156bba9f0a5d08b21c2303 SHA-256: 94c5fdf787b301cd2fe563de9cf213137f06db9b7818e6d2f1b276e2fc674ebb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to obtaining free Robux and game hacks to entice users. It contains multiple embedded URLs, with http://netcdn.tw/app/431946152/how-do-i-get-robux-on-roblox-game-hack being a primary indicator of malicious intent. The document's structure and embedded links suggest it is designed to redirect users to potentially malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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-do-i-get-robux-on-roblox-game-hack PDF link annotation
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/can-u-get-insta-banned-in-roblox-for-hacking_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/pastebin-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-character-editor_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-tycoon-money-hack-no-cheat-engine_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-installer_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hacked-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-coins-link_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_off00003c93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C93 23152 bytes
SHA-256: 4bf9670de9fe5653a8f55e24b784aaea6b5173b9c1e88fbea3a55f5a37455a21
font_01_sfnt_off00007102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7102 19060 bytes
SHA-256: b0fa18733e6a070784d304436149cec6c427497940c18f93e8b4c16e88d08469

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