Malicious PDF — malware analysis report

Static analysis result for SHA-256 b47c4a04060d4966…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 22:18:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c7a3521f0a9b4b2ef3256e2d71fccb09 SHA-1: 8a839d0da07a1a6b07760dff332267200910241c SHA-256: b47c4a04060d49666a82c078ba5b964f4c098458707680ef4fc137063d6951a7
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 0.9871

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.online/app/431946152/free-robux-no-human-verification-game-hack PDF link annotation
    • https://www.bridalguide.com/sites/default/files/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-spin-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-working_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
stream_004_off0000518b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x518B 31004 bytes
SHA-256: 8bf2a974f65559e6722dbbc99f902faf7faac074ef03c57be8dea62f7005a0c6
font_01_sfnt_off0000999c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999C 18860 bytes
SHA-256: 7bf6b254896799c3550cbaf8339a45bd8c79022df116fd793fc899e49cde55bc