Malicious PDF — malware analysis report

Static analysis result for SHA-256 0092b0812ed30328…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 17:24:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d76ed9a3eee1d69217a1b3573e9b9ea9 SHA-1: 189e2c95da42deaec21d2409f052ab17eaf9f5b0 SHA-256: 0092b0812ed30328e4b260ff4c205866382441b2b6973fb298667791ea69988f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are hosted on `thecongostore.com` and `netcdn.tw`. These links are presented as download opportunities for game cheats and hacks, indicating a lure-based attack. The ML classifier strongly flagged this PDF as malicious, supporting the assessment that it is designed to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/download-minecraft-bedrock-game-hack PDF link annotation
    • https://www.thecongostore.com/uploaded_files/userfiles/files/hack-generator-robux-sans-verification-humaine_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-game-hack-online_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-hack-funnehcake-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-get-2021-robux-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-no-generator_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/roblox-explorer-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-item-catalog-roblox_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/what-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-get-free-robux-june-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-roblox-hoods_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/hack-roblox-admin-commands-list_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.thecongostore.com/uploaded_files/userfiles/files/tiktok-free-apk-download_GM835599320.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_off00003289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3289 22572 bytes
SHA-256: d05cb2568d24c3df30cc03542ffc0996adea130a125f4caa4409d51da1806d4f
font_01_sfnt_off0000650f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x650F 18964 bytes
SHA-256: d365ba070fe6fd3fa6ed3fff7f0487a6e267f0f297f09f268bd410be9b6223ff

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