Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e763b1a58ffceab…

MALICIOUS

PDF

45.0 KB Created: 2021-06-03 09:00:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 18189cc6b988886bc9036e08ef8a8554 SHA-1: 60edaea49ca41c958bbe1e858a39158c22b6053d SHA-256: 6e763b1a58ffceab687e76085ed76788f3af3f3fef296527d6b3dd0ab1575075
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links. The primary URL, https://netcdn.online/app/431946152/easy-roblox-today-game-hack, along with many others hosted on sellitafrica.com, suggests a lure for game-related cheats or currency. The ML classifier strongly flagged this PDF as malicious, and the presence of a "download button" heuristic further supports a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/easy-roblox-today-game-hack PDF link annotation
    • http://sellitafrica.com/media/storage/editor/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-without-downloading-anything_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
font_00_sfnt_off000051c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51C5 26016 bytes
SHA-256: 6f11eeb1c78a0f23d98ae5f18096069de8312fdae4e930785bcc3c7cf11deef0
font_01_sfnt_off00008ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE7 18364 bytes
SHA-256: e553aa4dc1eeda8b8c5a317bba368be2d7717273b9b6ea138d4861a68924f7c9

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