Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcbcc2d7791bf55e…

MALICIOUS

PDF

32.5 KB Created: 2021-06-20 14:40:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 97776283e1bc1c8c4be7ac564a655387 SHA-1: c46faa662002fab5b69298664ec66a26d88333a6 SHA-256: fcbcc2d7791bf55e5bb191afdfe952a9e44d3965f1d0252fcf8d1c3ce60397d6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a prominent link and text related to 'Robux Cheat Generator', which redirects to a suspicious URL. This indicates a social engineering lure designed to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/robux-cheat-generator-game-hack PDF link annotation
    • https://vieclamjapan.com/upload/files/free-brown-pant-roblox_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-open-multiple-roblox-games-without-hacks_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/30-robux-free_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/daily-coin-master_GM406889139.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-how-to-get-more-fps-hack_GM431946152.pdfIn PDF document text
    • https://vieclamjapan.com/upload/files/roblox-www-com_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_off00002a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A34 21996 bytes
SHA-256: 80dcba9e8896a3996232327bd2982e5985d95624b53732135bac42802c3bfc04
font_01_sfnt_off00005aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AED 18820 bytes
SHA-256: 20ed92e27271207c562f97acb1b643a80fad58a1f7b65384ee4495f2cae60202

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