Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6d294bf3f0a371a…

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 05:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3c75f7854c7dcf7d98d0e3eb0617c931 SHA-1: 7d2ce30f1375f2fc78fe623e3a8728a879432e2a SHA-256: e6d294bf3f0a371a58490b44ef2cc1cd750558bbd549b54265c78c69a5814e80
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and cheats, specifically for Roblox, to entice users. It contains an embedded URI that redirects to a malicious website, likely to download a secondary payload or lead the user to a phishing page. The ML classifier strongly flagged this PDF as malicious, supporting the observed redirection lure.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/roblox-cheat-game-hack PDF link annotation
    • https://bookswithapast.com/ckfinder/userfiles/files/can-you-hack-roblox-with-lucky-patcher_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/hackaron-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-roblox-yolasite_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-hack-booga-booga-download-2021_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-promo-codes-october-2021-free-robux_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/roblox-mobile-hack-generator_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-use-cheat-engine-67-on-roblox_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://bookswithapast.com/ckfinder/userfiles/files/hacks-piano-roblox_GM431946152.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_off000031d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D7 21620 bytes
SHA-256: 0ba6ecaba9331666ab9d2406be8c0926ad02a2453ce5bb687f395aa0dabc3753
font_01_sfnt_off0000615e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615E 18756 bytes
SHA-256: 7a1367f9845b78f18e7acfba61726040fc30bed5fcfaea3e23da2d5e07670f1c

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