Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c1203427c1a4aac…

MALICIOUS

PDF

33.8 KB Created: 2021-06-29 13:54:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 2f50612a8c10133f047000137f62225b SHA-1: 4c01ec75e8467900fd3d964faed391b8603d0907 SHA-256: 7c1203427c1a4aaced9a3e6ac8b92912b6b4e96f666e45a4e26c4d53394f57e0
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 0.9824

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.co/app/431946152/pastebin-robux-promocode-hack-2021-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-websites-like-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-audio-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hack-penis_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-mod-apk-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/comment-hacker-un-conte-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/are-roblox-games-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-hack-roblox-with-cheat-engine-651_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/earn-10-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-get-free-stuff-for-your-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-legit-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-download-app_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-tycoons_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-hacked-version_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_off00002af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AF1 22328 bytes
SHA-256: e535ea442acd6d5fdcf852e0f54b68aab38ef12dc8fd2a83049231cd4b2ffd1b
font_01_sfnt_off00005cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 19936 bytes
SHA-256: b2cc9438907db99a1635b4c0d377cbb1dea5ae1e6de710879f52a54f2f1373c2

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