Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e62dcb979b0bc5f…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 22:15:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 15499f73021cd27db3c42568eef23d22 SHA-1: ab334b0514673a5e6c74968121d384f55b746119 SHA-256: 8e62dcb979b0bc5fc8f216f0388888bc8bdaa2c7a24d76dd8ac519cef879f20c
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/479516143/download-minecraft-java-edition-free-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/what-is-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/update-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-apk-hack-2021-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
stream_004_off00005389.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5389 24656 bytes
SHA-256: 30a3707611151aeb28d6f40b8ac39b92b7c293a1752d3d47b0a359fd104c01b7
font_01_sfnt_off00008acb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACB 18572 bytes
SHA-256: 152a86aa2203223781754dc8feb17de20161f8fdf6bb3f234180a5bd0d211371

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