Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb232fac7de22aa…

MALICIOUS

PDF

33.2 KB Created: 2021-07-04 01:34:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 58220bd4e4e5b522f1f918d9e67f9659 SHA-1: 372702a059ad4bb139116278733d9786f85ee586 SHA-256: 5eb232fac7de22aa732e8567e8d4b05d3acfc7b1d16c3e10edd0dbad2ce84aff
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.tw/app/479516143/minecraft-build-hacks-game-hack PDF link annotation
    • http://nationshield.ae/userfiles/files/gamehunters-coin-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-hack-an-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/hack-roblox-online_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/easy-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://nationshield.ae/userfiles/files/minecraft-windows-10-edition-hacks_GM479516143.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_off00002de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DE5 22220 bytes
SHA-256: 6cd5e8dc9040d026c86ddbadc7988a12072c94c3a893833e624bcb3b5f3e7f47
font_01_sfnt_off00005e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3D 18628 bytes
SHA-256: a4fd7a8a6c31dcfbd5d524261ca24fbd66144d88575524e109ec8b87e7a5b6d6

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