PDF malware analysis — malicious · 4ceda0b2a32f7f09

MALICIOUS

PDF

41.0 KB Created: 2021-05-14 02:34:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 53303d4e658ce63653f86527051f91a8 SHA-1: 31231154d2eaf34f90ec35010f4ea8458dff01f8 SHA-256: 4ceda0b2a32f7f098c68ed496fa19bab1036c3ee0e5273ef8d8481b52e5982d2

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 0.9971

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/coin-master-free-daily-spins-today-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/best-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-games-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/download-coin-master-hack_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/jailbreak-script_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-get-free-roebucks-without-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.

Filename	Kind	Source	Size
`stream_003_off00004808.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4808	23592 bytes
SHA-256: `37d77174cb93ef434d73973804bac1ed57212da3c67fd5004bbcfb3219865099`
`font_01_sfnt_off00007d0f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D0F	18480 bytes
SHA-256: `3f20608b23d642d48b0ef55ae4729c727d7cf00d09df157ae026893392480c2b`

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