Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c8ca694aa6d366…

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 17:55:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 36197d8722afd7b9d695e5b38ebd6d83 SHA-1: 0d9f167de5fcae21515e983cce36ad2640b562f3 SHA-256: e7c8ca694aa6d3661c29974fdbb4a68532f0454188106017d68235aa671f5652
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, directing users to a known malicious redirector. The document body and embedded URLs reinforce this lure, specifically mentioning 'Minecraft Free Ios No Verification' and linking to the malicious URL. This indicates a phishing attempt to trick users into visiting a malicious site, likely to download further malware or engage in credential harvesting.

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/479516143/minecraft-free-ios-no-verification-game-hack In PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-g_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/hack-cia-robux-gratis_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.christchurch-burton.staffs.sch.uk/admin/ckfinder/userfiles/files/best-minecraft-hacked-client-2021_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
font_00_sfnt_off000035ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35EE 22648 bytes
SHA-256: 3e4071a23472126ce8361150905770affaf9296cd3ef9d30b3a7cfb845725e30
font_01_sfnt_off00006873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6873 18132 bytes
SHA-256: 9921e29242a30a87c239e4842ad7b287d420a62858cff22e2e8107af17a37070

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