Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd0e233edb59af3…

MALICIOUS

PDF

35.7 KB Created: 2021-06-25 00:08:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b680c015ead89e2599462181c6acdcf0 SHA-1: 3470cac5c7f845dc9f847ec77fcb78b1f5e53c97 SHA-256: 6cd0e233edb59af3163108546b1ddafd9d6a696399a46503b65f431b670303fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free generator / game hack' which links to known malicious redirector infrastructure. The embedded URL, http://netcdn.co/app/406889139/free-spins-coin-master-unlimited-game-hack, is directly associated with malicious redirector activity. The document's purpose appears to be to trick users into visiting this malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-spins-coin-master-unlimited-game-hack In PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/coin-master-official-page_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/assain-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/wurst-commands_GM479516143.pdfIn PDF document text
    • https://www.hagleygolfclub.co.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000342b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x342B 22812 bytes
SHA-256: 6a0ecc419111d0e2a9fcff6bb5b70855ba4778102631859dd2c19cb66ae9f493
font_01_sfnt_off00006759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6759 18868 bytes
SHA-256: 2ae514214ba8136a29dde69fcf4364d8dbb9380ba0bdd85285d9bbc1786d9168

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