Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c2c71bbb24ea9c…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 11:41:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fd02c526e880580562e30c481e4af826 SHA-1: 168cf2392eb945d7cb2537c903f8e4279d53c046 SHA-256: 03c2c71bbb24ea9cd25b51fbc9b47ae06ded51c7c7f905b4cb988c1d2a94f40b
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/406889139/coin-master-free-spins-and-coins-app-download-game-hack PDF link annotation
    • http://lib.uho.ac.id/library//repository/hack-coin-master-xyz_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/my-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/level-coin_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/www-robux_GM431946152.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_off0000322f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322F 22872 bytes
SHA-256: cb9acbac4a0e67748a619934e74345785e11618632b106d21b843d03407a0aa7
font_01_sfnt_off0000659e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659E 18756 bytes
SHA-256: d83686db471f8f245c2f8ef1f44426007a21de0d25beaa974be47c01623e4190

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