Malicious PDF — malware analysis report

Static analysis result for SHA-256 25e95ced05bfcd36…

MALICIOUS

PDF

33.2 KB Created: 2021-06-25 22:16:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a8ce101f98ccccc8746bf34e76e4bf9f SHA-1: 69a8a911ddbdaacf6a3c711013da1522e70e0632 SHA-256: 25e95ced05bfcd36252973ac33786080bb2538bc87d5f89fa0cce25811bc9407
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.co/app/835599320/freer-tiktok-game-hack PDF link annotation
    • http://repository.ummy.ac.id//repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/filedropper-roblox-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-hack-paintball-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/get-code-for-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/freerobux-co_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-cards-codes-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-online-photo-shop-for-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-walls-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-hack-roblox-survivor_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-account-free-with-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-promo-codes-for-robux-free_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-account-robux-roblox_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_off00002d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D97 22420 bytes
SHA-256: c4b2e4bb3b87338ce8700e53db3f45305fed8bcfb76287fcfa72c8ed12628baa
font_01_sfnt_off00005fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB7 17972 bytes
SHA-256: 3a631f03405cb13e62874ba391eaeb3d10fa9d89081f75fb7e0654d21b715f0a

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