Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac95d1d26cd70d3d…

MALICIOUS

PDF

48.8 KB Created: 2021-05-14 02:06:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: da35c12fa31eb4d881334862dc6dd4e8 SHA-1: ad15dc4633b12e25a8f2d4ca55641352f4d64183 SHA-256: ac95d1d26cd70d3d6038ba8b9c50d2a4ac939056b2b2bab572f68da086dfe00d
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 0.9228

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/hack-coin-master-download-ios-game-hack PDF link annotation
    • http://brandyourbody.com/images/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/robux-website_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c5a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C5A 28480 bytes
SHA-256: 7f29b9d897ed635340be54a7bc5ea475f8cd75b07575e52eea306c20bd784edc
font_01_sfnt_off00008a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0F 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off00009c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C27 18296 bytes
SHA-256: 43890a2d2785c69c6118ff6d435c8783855468c0fa0e501324addce9a65c84f4

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