Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4cc7bdf4e22f569…

MALICIOUS

PDF

45.1 KB Created: 2021-05-16 00:37:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c5c43c447a6c0c426e65fb1e7246a566 SHA-1: 30f51b7fa611ed363a365540d93a5d91d3394ba1 SHA-256: d4cc7bdf4e22f56903f296d28e9afb57fe771dd98f5161f67eda5fdcdbabf58a
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 https://netcdn.xyz/app/431946152/roblox-hacked-version-download-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-hack-coin-master-ios_GM406889139.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
stream_003_off000049c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 29064 bytes
SHA-256: a0c8e73c39a404af36d5294380767b87ee6b8bb3f6bf9fee2a90b0578dd64daf
font_01_sfnt_off00008c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C15 18940 bytes
SHA-256: 045b97c0477fa0a77fe25df190f3dc8d91b636a592878cab4dc6788bf6280dbe

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