Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f829a4a524d116…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 18:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7b12f09bdad98627e1661c030b3d21e4 SHA-1: 3f066738fbddfec3dc758a9ab03252b88e923f81 SHA-256: 38f829a4a524d116d930f258cf38acee990f0e8a3930cd9c4ef62d995a593f9e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free game hacks' to trick users into clicking malicious links. The document body and heuristics indicate it redirects to external sites, likely to download further malware or exploit kits. No scripts were extracted from this sample, but the high ML confidence and numerous malicious URL firings strongly suggest a malicious intent to compromise the user's system.

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/free-robux-hack-no-verification-game-hack PDF link annotation
    • http://pspmrsmbpj.com/opac/repository/how-to-you-hack-on-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/gamekit-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/roblox-rc7-free-download_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/hack-roblox-tener-robux-gratis-2021-diciembre_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-hacks-download-android_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/boku-no-roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/how-to-hack-a-draw-it-server-on-roblox_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-heaven-daily-free-spins-link-today_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_off00002fd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FD8 22308 bytes
SHA-256: 9031643c1d971c663e2d7c71dc471e661f0624b264478532fb94286c3ea29338
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 19244 bytes
SHA-256: 96540bd7c84d60e769713d590412c745bf113fce47b0f54684cca50d2dde6ca8

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