Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b26a8b2cc3a025…

MALICIOUS

PDF

45.1 KB Created: 2021-05-19 07:58:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9c96dd8d6e95e00d500d98ede145df3c SHA-1: 6a8b78459a4099ab9ca8f2bac37491fb6b3cd47b SHA-256: e8b26a8b2cc3a025083f2a544bf913c020023c1bc2d1b80b133acadfd5957b9a
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 0.9621

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/block-best-robux-game-hack PDF link annotation
    • http://autoskola-scp.com/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/robux-only_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-kid-friendly_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
font_00_sfnt_off00004938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4938 25636 bytes
SHA-256: 6958cb1fd694272c7faaa3ed168cae78628180d9d20e7ce3deacca109f13e5bf
font_01_sfnt_off00008432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 2824 bytes
SHA-256: bd082aa73fbb1a8b3bd2e5c998d3d8e31d1dfc71ea36f846af746f69a0d2ab7f
font_02_sfnt_off00008de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE5 18196 bytes
SHA-256: daaabad6ab6022bda6900dabddedd47967e3de0560a218c263fb5add1c96f29e

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