Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb160b4e573ab84c…

MALICIOUS

PDF

34.2 KB Created: 2021-07-07 22:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 17c2eb76f620642e859b4b9f65832898 SHA-1: 4ea4630971b0e2935b765f44503fd33a3d886e71 SHA-256: cb160b4e573ab84cf7cc92d27597824c914164078a2116bff4855b1e3cdd1c72
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/will-minecraft-dungeons-be-free-game-hack PDF link annotation
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-free-magma-fiend_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-no-human-survey_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-tell-if-your-roblox-account-is-hacked_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-hack-games-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-robux-hack-no-survey-no-password_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/roblox-free-mouse_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
font_00_sfnt_off00002f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F52 22592 bytes
SHA-256: c852ee9479c7c3e908c6d2d4cf7b5adf71ea9f0afd9a55c9b3d304af076ce5a8
font_01_sfnt_off000061a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 18796 bytes
SHA-256: a3e2eca43bdc685dc91cfde71aa7da7e93eda67de1cffc55b2ecd2ffb91a605f

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