Malicious PDF — malware analysis report

Static analysis result for SHA-256 76bb6d8ec8378277…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 06:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 15b38d16faf13ace2cf18f7f360f7c08 SHA-1: 8a23b6fa000595c39e08cf14ac930e4b9a248c80 SHA-256: 76bb6d8ec8378277f55a20cb12a3bc242760f1e78ba5ed64733c953b8dcd5e80
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.tw/app/479516143/minecraft-free-trial-game-hack PDF link annotation
    • https://www.dotnotion.com/uploaded_files/userfiles/files/camisetas-de-hacker-para-crear-en-roblox_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-robux-hack-2021-android_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/pokemon-go-free-meltan-box_GM1094591345.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/how-do-you-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-homepage_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/free-robux-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/how-to-get-free-robux-with-a-code_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/www-bloxland-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/hacks-para-counter-blox-roblox_GM431946152.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/how-to-get-free-xp-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • https://www.dotnotion.com/uploaded_files/userfiles/files/how-to-get-verified-on-tiktok-for-free-2021_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_off00003313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3313 22376 bytes
SHA-256: f4b2c88ca44b604ae3c23033a8349b35ce140ca53f2198bac38615b6eac25146
font_01_sfnt_off0000643a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x643A 17928 bytes
SHA-256: 0792cf34759639c12fb16c68b09c197272744776153a85f812a9a9f109c9c07c

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