Malicious PDF — malware analysis report

Static analysis result for SHA-256 16dbbb3f5c11d773…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 17:46:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c92d3e90048b8048c7f1c77189a2a4cc SHA-1: 0ca73b42fbad0d780f39ac1828f3289406d50430 SHA-256: 16dbbb3f5c11d773308f8a7e06bec99518e11508fe1a85f482b8a5ff3c8c4305
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.co/app/431946152/roblox-world-hack-game-hack PDF link annotation
    • https://ceranique.nl/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/ninja-zone-roblox-money-cheat_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robux-free-pc_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-robux-hack-mobile_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robux-hack_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/roblox-halloween-costume-free_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/free-robux-eith-no-verifications_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ceranique.nl/images/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://ceranique.nl/images/free-tiktok-followers-no-human-verification-or-survey_GM835599320.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_off000030d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D9 22852 bytes
SHA-256: df133b67b11abf2b4a2d90732b85eb46dacc6dfd2543dd5e82ccbe4fdaa87b2a
font_01_sfnt_off00006416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6416 19028 bytes
SHA-256: bbf43a7860f9cf1a9d9ef843577c3fc6a7667e4461f895cbf5eb5173c13c7c72

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