Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2bfd37d62401dd…

MALICIOUS

PDF

47.2 KB Created: 2021-06-11 05:42:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6bab9f9e2c1be8cbb4f44de1b5d0d990 SHA-1: e84d66162e25f6f0b857c92b3a15432651d012a5 SHA-256: 7a2bfd37d62401ddfa0bf0bc77d95c0fc6db26bb110417106474ffa64e7c6794
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 0.9832

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/cheat-roblox-retail-tycoon-2021-game-hack PDF link annotation
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-cards_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-hack-on-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/unlimted-robux-hack_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-get-vip-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/fe-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesgorontalo.ac.id/repository/teach-me-to-hack_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_off0000535e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x535E 27800 bytes
SHA-256: c1c195a7b3b189d5b647d0ecf4cc37320bb5d763116045821575b019976cee45
font_01_sfnt_off000093ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93AB 18984 bytes
SHA-256: ce681f648a95ef89e8881477e12fb57f274e0053294ee5ac9affe5f56c1ef8b6

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