Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4676d6ecee0626…

MALICIOUS

PDF

48.0 KB Created: 2021-06-08 22:18:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 647f061a996cd9bd839dc1c373c76a20 SHA-1: a86790c83500a6e50083c484d4c5e70966a09c5d SHA-256: 2b4676d6ecee0626027393b00cdb05caefc014be2552fd521c9670fb407d0381
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 0.9796

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.tw/app/431946152/application-hack-roblox-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacker-for-hire-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-promo-codes-real_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hacked-hat-roblox-t-shirt_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-place-rewards_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-download_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_off00004e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E5F 28028 bytes
SHA-256: a330fe58195fd2126d8384659df74607abd10831d9b9e98ce5b39124b826e10b
font_01_sfnt_off00008dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFE 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000097ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97AE 18580 bytes
SHA-256: cd82d88c4f419feb6ef5dfab56875811213c9fd2e234ad742d92eb0f21f822b7

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