Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd1f3d4f9ae5008c…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 02:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 914498131cf4f324952c0cf6bf1decf6 SHA-1: c73bfa2e4da52ce57484c900f7361bb7fbedaec0 SHA-256: bd1f3d4f9ae5008c1b7787bf59819eaa57218b17fde0392fc13cce9266a8210e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/get-free-robux-on-a-server-roblox-game-hack PDF link annotation
    • http://perpus.i2s-learning.com//repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-city-simulator-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-download-free-windows-7_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/freerubux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-paddwords_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-project-jojo-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-help-free-robux_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_off00002de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE7 22696 bytes
SHA-256: c02bb2125772023ab42457acd1abd544bcab93456faf85d28d5091a2e543ea1f
font_01_sfnt_off000060be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 19008 bytes
SHA-256: 045f390f5a1f2a8341ba359a15ee3a38547a3a83042ca5d70b4fac14ee1606fa

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