Malicious PDF — malware analysis report

Static analysis result for SHA-256 8493a6643b95f128…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 09:34:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7d3294ca00ad5e59b8bd8affa8407b2f SHA-1: 12f00bdca0f6199be440c8b1cad4829001950fb5 SHA-256: 8493a6643b95f128ef56a75119522d6cda0af39d95ec36b315b6cb2f112532c7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9969

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 https://netcdn.xyz/app/406889139/how-to-hack-golden-card-in-coin-master-game-hack PDF link annotation
    • http://www.yaringhospital.go.th/UserFiles/File/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/gamesofficenet-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://www.yaringhospital.go.th/UserFiles/File/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b4c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B4C 27812 bytes
SHA-256: 81992047254328fde465da630191bbe1fb41dce8e0b4817cd18c7d7ee87a7032
font_01_sfnt_off00008a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 18128 bytes
SHA-256: 6e99c01af804bf31f20ebf44881e4bc5fba6244af653fbf7f93a50858f61393b

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