Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ea6fa3056539cc9…

MALICIOUS

PDF

43.5 KB Created: 2021-05-17 00:03:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 4395a0818e385aeaf7ed96ed48ab8786 SHA-1: 203dc64e9346cf29550f3983641a4a99f8dc8fb0 SHA-256: 5ea6fa3056539cc92e4e905e74958a5136717572b04970100bbec9063c5de3f8
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 0.9969

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/rbx-gg-free-robux-game-hack PDF link annotation
    • http://mcdougalfamily.site/images/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://mcdougalfamily.site/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://mcdougalfamily.site/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://mcdougalfamily.site/images/coin-master-free-coins-and-spins_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_off00004cab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAB 25608 bytes
SHA-256: ad41400e21c5e2bd687fe35dae5513482f180631e07cc67d2b0927eee988e8dc
font_01_sfnt_off00008797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8797 18304 bytes
SHA-256: d1ad45f5b083d36c6ec4c124be04f92537ae8dd31535970cb7662339535ad89d

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