Malicious PDF — malware analysis report

Static analysis result for SHA-256 63aa5ed222dcd6cb…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 11:41:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 85fcce1c676a88b3498645442d6c4ca5 SHA-1: 8a2b350c871cb419710fbfe14bad71bd4ce4affe SHA-256: 63aa5ed222dcd6cbc914aa719b29dd6d28d53030faaaf75a0e3dbfa4e9e34f61
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and in-game currency to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/watch-ads-for-robux-game-hack, is identified as a redirector to potentially malicious content. While no scripts were explicitly extracted, the PDF structure and heuristics suggest an attempt to drive users to external sites for further compromise, likely involving social engineering.

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/watch-ads-for-robux-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/elsaiyan-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-caveman-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-new-hood_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/tiktok-free-likes_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-chaos-wacher_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-no-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-accounts-with-bc-2021_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_off00002f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F88 22564 bytes
SHA-256: 14f9cf82135df076c3874482ee2526685e5a997ff10e79edb3fa8e51f5685a51
font_01_sfnt_off00006207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 19360 bytes
SHA-256: 3afd0598bb5a5ad237ecb392e60babe63cf66cf5547cf504e55ce532e2e57b01

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