Malicious PDF — malware analysis report

Static analysis result for SHA-256 465bb738d6ebbfd6…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 18:07:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8916b64f1efb4c53d3d4a6d2d502d6fa SHA-1: 05ff9a75deac7a8c1be00027160379437b17de49 SHA-256: 465bb738d6ebbfd69aba7ba17cc93ed0fca9f77e8e521960cab0bc9303a548fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and hacks, specifically mentioning 'Lazyblox Com Free Robux'. It contains numerous embedded URLs that redirect to external sites, such as http://netcdn.tw/app/431946152/lazyblox-com-free-robux-game-hack, which likely serve as landing pages for scams or further malware distribution. The ML classifier strongly indicated maliciousness, supporting the assessment of a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/lazyblox-com-free-robux-game-hack PDF link annotation
    • http://www.valenciamaids.com/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/set-you-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-rthro-packages-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-free-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-only_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_off00002f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F67 22444 bytes
SHA-256: f5c1f5ee3d5cf91282d112c243a6ccd801551c8ad57778d5a21a5d96499158f6
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 19312 bytes
SHA-256: f9ede7273c4848aab069705d78d47b2d010167552475a4dce029ed291f713c56

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