Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e1681bcda3fe6d…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 08:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d4bae90ce8589ea1f71a9e3700fdfc98 SHA-1: c4fa4bce5f85875f153a86d58d7261ac48e19004 SHA-256: f6e1681bcda3fe6d44ee47dfc0d1bddd073f614c8c0ca78157f002042a38bf60
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.tw/app/406889139/coin-master-online-hack-tool-game-hack PDF link annotation
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/roblox-awards-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/long-pastel-hair-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/is-tiktok-free-to-download-on-iphone_GM835599320.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/free-robux-roblox-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/roblox-gift-card-free-no-human-very-or-survey-youtube_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/catalog-roblox-free-hair_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/how-to-get-free-robux-on-roblox-simple_GM431946152.pdfIn PDF document text
    • http://pustaka.stitdarulhijrahmtp.ac.id/repository/ways-to-earn-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_002_off00003114.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3114 22424 bytes
SHA-256: b11f1f8957fa346b2763bfcccb27a01d0078e4ddb53e41ad2eb48cc8aa68b1c5
font_01_sfnt_off00006328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6328 18080 bytes
SHA-256: e55d028ed43e44089d97b54b530531a466e653d2d57bed8153c7241ef5bfe6e5

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