Malicious PDF — malware analysis report

Static analysis result for SHA-256 19707f7552c1c4cb…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 17:59:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d6b6d4f269aa5057377c9d714772adab SHA-1: 27d81f5c69be8c56f976f1966b320bbba19d3f43 SHA-256: 19707f7552c1c4cb4a6c40246aaa6673657874773d8bd36332c94aae7274bc18
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to external websites that promise game hacks and free in-game currency, such as 'spins-coin-master-game-hack'. These links are likely intended to redirect users to malicious sites for phishing or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/spins-coin-master-game-hack PDF link annotation
    • https://cosmosocean.com.tw/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-coins_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/boku-no-roblox-remastered-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/when-does-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-get-free-robux-instintly-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-get-free-admin-commands-in-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/shark-bite-hack-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/hack-robux-youtube_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-how-to-get-free-robux-2021-no-inspect-element_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/2021-hacks-for-robloxs-aimbot_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-hack-somebodys-roblox-account_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-hack-mad-city_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-obby-gives-you-robux-for-free-no-password-required_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-catalog-free-animations_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/roblox-hack-codes_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_off00003604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3604 22304 bytes
SHA-256: 5164e0040cb40f3a6d39d5ce3be66b77ee9aed84d79735ee2b78dc80efb09cc8
font_01_sfnt_off00006784.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6784 18008 bytes
SHA-256: 3a6caad617d08eb23b12641015d90453c136504c644d8e17b9ca6c545c23a1c1

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