Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fbba4afca40e9f…

MALICIOUS

PDF

36.3 KB Created: 2021-06-22 21:49:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e52336e15800342e4b6085fa31796735 SHA-1: 20376e2ac1d70b3551502fe965d6f1aaba150434 SHA-256: 34fbba4afca40e9f96d1056c6e88cbe183272018a79c6ebf86dde66f4e3f4427
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 0.9980

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.co/app/431946152/how-to-get-free-robux-without-doing-anything-game-hack PDF link annotation
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/roblox-girl_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/moon-active-games_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/scarf-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/picture-roblox_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/spin-coin_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/claim-roblox_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.boneyhayschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-roblox-credit-for-free_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_off0000341b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x341B 22572 bytes
SHA-256: 80fea019a0927ade3416218c61d2b031bb6e89fedde3226db2bd03e52188152f
font_01_sfnt_off00006697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6697 19816 bytes
SHA-256: a89a9c26f3e3a3213b52b81013f05ff3695d44fb7be09e02fac6d25675b35ef4

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