Malicious PDF — malware analysis report

Static analysis result for SHA-256 762581eadaaf1d3e…

MALICIOUS

PDF

32.0 KB Created: 2021-06-17 23:13:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9383c19250afcb7d7bd84d7c3085de8b SHA-1: 7a04c941442a8812e109de54fbc4342e8724e3ef SHA-256: 762581eadaaf1d3ee60915d5f2412f5bb91b509823ec77161a770f519641d910
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a common lure of 'free game hacks' to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/how-to-get-robux-easily-and-free-game-hack, and numerous others hosted on pspmrsmkklawang.com, likely lead to malicious websites. While no scripts were directly extracted, the PDF structure and heuristics indicate a redirection workflow designed for user exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-robux-easily-and-free-game-hack PDF link annotation
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-invite-friends-free-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-free-robux-poke_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/hacks-para-strucid-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-free-stuff-on-roblox-catalog-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_off00002ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB3 20664 bytes
SHA-256: be7834f4171c1e5538e4adf640a5a8e081fab800265e1b74950a591a208ab574
font_01_sfnt_off0000571c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571C 19344 bytes
SHA-256: 7a0640593d20fb0d19b4bc4e0457eab4da3820e9beb30739ac90e8acb4654a0f

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