Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a22fbed16a88578…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 19:33:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 31869b2d3d3a9047c03ab0fc98cb1e86 SHA-1: 0aeff4f24a76b5a1eb43890febcfa942ac59e1ed SHA-256: 9a22fbed16a88578778c09c0e6b3fe7468ad4d3257b26e3f8c0b3f39e9e930c2
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/431946152/free-robux-no-verification-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pastebin-robux-promocode-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-you-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-clothes-generator_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-free-robux-no-downloading-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-obbys-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hacks-para-todos-los-juegos-de-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-new-version-free-download_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/premium-softwares-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-ios-app_GM406889139.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
font_00_sfnt_off00002f21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F21 22188 bytes
SHA-256: a9211a02ea5dd41f0166e544f40fd9c8ac6e0e25ef573e50b5a130d4dc3c471d
font_01_sfnt_off00006061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6061 19072 bytes
SHA-256: ace71d10471f941b47a74757ee9bffc2eb087028e16fd0b67ae59ecc13578840

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