Malicious PDF — malware analysis report

Static analysis result for SHA-256 67329ec368c54d34…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 02:59:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b4a195d265385aa4bffbd97d3f44d20b SHA-1: 85aa0c6c246723f8dfe322c1c9ac3bde9efcdeb0 SHA-256: 67329ec368c54d34158d61a8c0fe269ed14b70ae4983f009012b94daf394b8ad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs reinforces the likelihood of a phishing or scam attempt. The primary goal appears to be redirecting users to a site that likely hosts further malicious content or exploits.

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/free-coin-master-coins-and-spins-game-hack PDF link annotation
    • https://radiocaxias.com.br/portal/imagens/files/roblox-lumber-tycoon-2-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-typical-colors-2-hack-script_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-roblox-accounts-with-robux-2021-september_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/auto-hockey-roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/www-roblox-com-games-for-free_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/gary-s-hod-infinite-life-hack-roblox_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/how-to-get-free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/roblox-fidget-spinner-free-games_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/pet-trainer-roblox-hack_GM431946152.pdfIn PDF document text
    • https://radiocaxias.com.br/portal/imagens/files/how-to-make-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ff4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FF4 22776 bytes
SHA-256: f4e9aeec650bc7c5a6ccefb04d2bb10defefea958f3b911ff56af04b1447043b
font_01_sfnt_off000062d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D1 18348 bytes
SHA-256: cc12283f691ecd9c6c4381c5355a15c3235cfa1ea9601b68c1f91d3883d88a7b

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