Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c80fbbe4572a383…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 10:53:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a41edf031c67c2f4c5a9d6d037b808ba SHA-1: d2f0d0695beb735f3becda8c54d65a5391266055 SHA-256: 8c80fbbe4572a38352268c06a5c0a6bdb8ffed09926eff085eb3ee51346292b9
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 0.9865

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/roblox36com-free-robux-game-hack PDF link annotation
    • https://opac.heritagejkt.org//repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-unlimited-coin-master-online-tool_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • https://opac.heritagejkt.org//repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.heritagejkt.org/repository/hack-coin-master-ios_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
font_00_sfnt_off00005015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5015 24824 bytes
SHA-256: 2fd5d2452f43ec9a865e00869d1c827dd9e425626faa76d36ead576809eee300
font_01_sfnt_off0000894c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x894C 18688 bytes
SHA-256: e17bde65d20b22401de6e72563f841589ec56c60b3059d89effd80f13a3186d6

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