Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd471e7ad1be00b4…

MALICIOUS

PDF

43.4 KB Created: 2021-06-04 02:35:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 20fbaef6b57bc280f7677c75c401f5c8 SHA-1: 6264f2ad6274b6467633eb5fb53e7f6ba061d7c1 SHA-256: fd471e7ad1be00b43ef7e8e1f5348a70ca47e806a4b1f042ee7d7745713bd26c
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-spins-blogspot-game-hack PDF link annotation
    • http://perpustakaan.iahntp.ac.id/repository/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.iahntp.ac.id/repository/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://perpustakaan.iahntp.ac.id/repository/rbx-roblox_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_off00004d6d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D6D 24904 bytes
SHA-256: 5fa7acff2b72eb821c1c3ba7709cd798f0a7d7e83bf63ff24549bd5cf316aa52
font_01_sfnt_off00008545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8545 18812 bytes
SHA-256: 99efaab321cd8bd4771148dad361c5d136942e4fae15d22f58752892cb19a04e

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