Malicious PDF — malware analysis report

Static analysis result for SHA-256 e240564d9fbcd9a9…

MALICIOUS

PDF

42.4 KB Created: 2021-05-15 00:13:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 5375ef43e20297abefdba90132f5038c SHA-1: 16e8599895dcea368cce8d600984bb4dab017552 SHA-256: e240564d9fbcd9a99a5741b8ef7e09bbd160ab0ddd360d9dbd2e99626be964cb
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 0.9971

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/406889139/coin-master-hack-cheat-generator-d-game-hack PDF link annotation
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/what-is-robux_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
    • http://www.espaciocultivarte.com/ckfinder/userfiles/files/coin-master-free-coin-and-spin-app_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_off00004a77.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A77 26196 bytes
SHA-256: 2d51c8ff16efe9bf9f812879566dcd307f7b40d966fea9c4f5ae501ef4bb5f4c
font_01_sfnt_off0000842b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 18052 bytes
SHA-256: 69e58de4fe57995ee3fde2136fe389d8145efd54ac3cf18bd53b540b229c712e

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