Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e10856b692b20ed…

MALICIOUS

PDF

43.0 KB Created: 2021-06-03 23:33:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: b48f3e005c3fde172c09b4205b897b6f SHA-1: 8b050795714cb5b84c3e9fc9dd5ebed27404ee0d SHA-256: 1e10856b692b20ed6908a9b79c8bff5dd7da903e9a22c27d04e1399f775e1db5
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 0.9874

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/406889139/coin-master-400-spin-link-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/pokemon-go-free-mew_GM1094591345.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/can-you-give-me-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/microsoft-bing-robux_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_off00004de2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE2 24708 bytes
SHA-256: b3389fb4b7c48f8d95aaf2b39ea8caab08115c8eb826a21ff6b10e8ee71ea2dc
font_01_sfnt_off000085be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85BE 18124 bytes
SHA-256: 2e62694bd2406c826cc87b3b16ab8edfdf3b59f55135debd3672f7e2598d1766

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