Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cad5d2eb4f7cda5…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 05:30:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 872353e1fc986cb078dade386aab77e7 SHA-1: ab1150aa945968348ef24ec4d04a8dd87a3686dd SHA-256: 6cad5d2eb4f7cda567b442dea38a888427eb14b35cfa64f57927515a70640402
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/406889139/coin-master-hack-for-ios-game-hack PDF link annotation
    • https://radiocaxias.com.br/portal/imagens/files/free-draw-2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-hack-more-13_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-script-hack-booga-booga_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/2021-best-roblox-hack_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-how-to-get-free-clothes-2021_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/robux-hack-no-human-verification_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_off0000323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323B 22740 bytes
SHA-256: 9f84f8d2332b10e4bf2ae4652cce65e34a1d9a9b6b8f4a231acb65bd7db0a19e
font_01_sfnt_off0000651d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651D 18168 bytes
SHA-256: bbc449a7115d733bf62a28b8c7658650cfd01950ddcd0473f447488e3cd3a617