PDF malware analysis — malicious · c2a5ddc023835c38

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 22:32:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 54d00ef870d316028c61f5ecbe79430a SHA-1: d96d9125fcd2902df7382804dd4c45c0a28d6cf5 SHA-256: c2a5ddc023835c38f7d26d9eeb0cd9e29240e5b434ed1dd6309795f976bdd5f3

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 0.9969

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 https://netcdn.xyz/app/406889139/hack-para-coin-master-singapore-game-hack PDF link annotation
- https://radiocaxias.com.br/portal/imagens/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/robux-for-surveys_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
- https://radiocaxias.com.br/portal/imagens/files/coin-master-villages_GM406889139.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.

Filename	Kind	Source	Size
`stream_003_off00004ca8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CA8	28836 bytes
SHA-256: `38ccc87171623b570f448998984ee584deb38fb2ac849424db767ac519af8e2a`
`font_01_sfnt_off00008970.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8970	18332 bytes
SHA-256: `f4cc29573db357544154724085d5d3303098b5cd5cdfb23e2fd2f731e3bbede2`

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