Malicious PDF — malware analysis report

Static analysis result for SHA-256 04de24fe4f3cdb1d…

MALICIOUS

PDF

44.2 KB Created: 2021-06-04 02:56:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7bce43b3c5718b18eef6af5c9365ca5b SHA-1: 8d3199931f6bf7ffab5126249ba218f3cc8ccf29 SHA-256: 04de24fe4f3cdb1d447be6cf6d0cda1378ebbe2ab48cebd49c68c6ba3785e00c
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/406889139/coin-master-daily-free-spin-app-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/mc-update_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-place_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-daily-free-spins-blogspot_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_off00004fb9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB9 25204 bytes
SHA-256: 43252c87a704f902602c1a06f25dfc4cfa754b989eeff43c69599061d58c0b61
font_01_sfnt_off000089f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F6 18308 bytes
SHA-256: f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d

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