Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3589fc26e364188…

MALICIOUS

PDF

36.1 KB Created: 2021-06-21 12:29:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4111390dd530d847cd3e2a23d2a3c037 SHA-1: e6c6c8e703fc38778a2db25581d7f3aa037b3aa3 SHA-256: e3589fc26e364188cdafc03a99212d4ee32f048d36d3301cd85f033605caa87b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The ML classifier strongly indicates malicious intent, and the presence of multiple embedded URLs reinforces the phishing and redirection tactics.

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/431946152/roblox-com-free-dominus-game-hack In PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/roblox-how-to-get-free-faces-2021_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/free-robux-hacker-us_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/free-robux-download_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/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.hendrejuniorschool.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-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
font_00_sfnt_off00003574.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3574 22612 bytes
SHA-256: 32b868f3a25596bad835ec36fcf052860cce654456c88aa9f869bf91084fa350
font_01_sfnt_off00006790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6790 19340 bytes
SHA-256: 38eca3a00cc77c80c0bcda3dc8fd094b1fc956e96e447c061c1268147953a615

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