Malicious PDF — malware analysis report

Static analysis result for SHA-256 38eebaad29488bc7…

MALICIOUS

PDF

35.6 KB Created: 2021-06-22 19:15:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 81c964444f6f5fb2ad4ce0c35f2d1045 SHA-1: cc08ca2e95db8802c78d0f90cf611b5e268f00a2 SHA-256: 38eebaad29488bc7c37420114bead1321911a34760c9e37816dac326a4fb3d00
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF contains embedded JavaScript and links to a URL that promises game hacks and free spins, a common lure for malicious content. The ML classifier strongly indicates maliciousness, and the PDF structure and content align with a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the redirection or download of a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/406889139/coin-master-fan-page-free-spins-game-hack PDF link annotation
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-cheat-engine-ccv_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-do-speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-weapon-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-jailbreak-hacker-cage_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/2021-roblox_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-ipod-touch-roblox_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-coins-and-spins-app_GM406889139.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_002_off00003605.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3605 22564 bytes
SHA-256: e7ef6594854f0e17793984d083d62ed1f2b7051ec603da5986475b145329314e
font_01_sfnt_off0000688e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688E 18328 bytes
SHA-256: fc07e399d569c9cb0326c2788f4b655073573cb4c501715abae06525b94755db

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