PDF malware analysis — malicious · 72ce5846a203f010

MALICIOUS

PDF

35.6 KB Created: 2021-06-18 04:40:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7a335aad6d7d7f3ae2a35863fd1187c8 SHA-1: 929ff7336eff8b62c1b02c150ca1acb7b2ae6661 SHA-256: 72ce5846a203f010726526e39d5207eed21ff423cbbacbc35c6abe5b0f8af096

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.co/app/431946152/how-to-hack-youtubers-roblox-password-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-e-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-free-group-funds_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-roblox-com_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-map-editor-hack_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-hacked-client-download_GM479516143.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
`font_00_sfnt_off000032a4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32A4	22564 bytes
SHA-256: `4dd874ff1b17078abd14b2e387570b7a43cfacf67314bf993450e815e248e76d`
`font_01_sfnt_off000064ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64EA	19368 bytes
SHA-256: `fcc18063e11611bcd30a82aaa50262d2646219b636e038172d477c63a35b04c8`

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