Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc8b9475baf4680…

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 08:47:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aaa32457fae72dfe078ad58eba24f35f SHA-1: 104631bc62f4b245328a0d24ac9dcc452ddfe83b SHA-256: ffc8b9475baf4680041aa9843692e1ae76f93ac1e2a1d32cffa0dc26b33cb866
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 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-things-in-roblox-catalog-game-hack PDF link annotation
    • http://pustakafpsi.uin-suska.ac.id/repository/is-roblox-gluten-free_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/enter-this-secret-code-for-5m-free-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-free-dominus-2021_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/roblox-free-candy-van-exploit_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-play-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/where-to-put-code-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/robux-generator-hack-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/coin-master-hack-that-actually-works_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id//repository/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-hack-in-asssin-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/how-to-hack-in-games-roblox_GM431946152.pdfIn PDF document text
    • http://pustakafpsi.uin-suska.ac.id/repository/free-online-roblox-no-sign-up_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
font_00_sfnt_off00002e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2A 22808 bytes
SHA-256: 8a3e66f323620c3228557d34d617be5c372d2d90f765dc5ee23ada11e47a7189
font_01_sfnt_off000060b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B8 19204 bytes
SHA-256: beca3a982eefdccbe25f3e9bb514b2795afbfd2bbf3f4375c13807216fc980b4

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