Malicious PDF — malware analysis report

Static analysis result for SHA-256 41d0d632c3e8f31c…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 06:53:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 777473854682251123de7d92e2222c6b SHA-1: 2af3cc38426424183ccd797be4135187b7d3723c SHA-256: 41d0d632c3e8f31ce1e836caba6e47e610590145c234a509cb0680273edf5027
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-hack-pc-cheat-engine-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f73.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F73 24688 bytes
SHA-256: 7105b0b8b85f3aa7c60a8ef4b91569373099fa297880e3e958f6ebf6e0926140
font_01_sfnt_off00008723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8723 18324 bytes
SHA-256: 202cff6cc62c8c60a51a1665bd3df642db17a3e84dc9a164b45f2764f23edef7

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