Malicious PDF — malware analysis report

Static analysis result for SHA-256 da52932dcccd9844…

MALICIOUS

PDF

43.0 KB Created: 2021-05-19 22:07:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cf58d9c2fb73389721bceb1fdbc8c560 SHA-1: 309e422cc9eefed5b1f26416060e9dd6c9dad98b SHA-256: da52932dcccd98441cabcf9dec8ac9c43e628d765bf3ca7186874ca4b17dcd9d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to a 'free generator / game hack' redirector, specifically pointing to 'https://netcdn.xyz/app/431946152/free-accessories-roblox-game-hack'. The document body, though partially corrupted, also contains this URL and numerous other links to similar game hack or cheat sites. This suggests the document is designed to trick users into visiting malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-accessories-roblox-game-hack PDF link annotation
    • http://repository.ummy.ac.id//repository/more-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/tiktok-free-like-generator_GM835599320.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-credit_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/i-got-hacked-on-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_off000049e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49E4 27312 bytes
SHA-256: b42a0f4ae26f440095d0aee8fa352f13019d9f055dc700c0ad0e7aa4502e4d91
font_01_sfnt_off00008685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8685 18068 bytes
SHA-256: 1bea2de0f546621612e5e0cbd01172ecf5f1ab9f5485e5c32d3a5168ac155f59

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