PDF malware analysis — malicious · 27e9ce71f6ed3d51

MALICIOUS

PDF

35.8 KB Created: 2021-07-06 14:38:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: cacf0cd0f913c781af5ce7e399aff501 SHA-1: c064692c2901ed93437238fb7f911aa9c4d4eff2 SHA-256: 27e9ce71f6ed3d511d9e816d74ccfb70c3c0e09e5127a223913e8e1442bb68c2

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/479516143/minecraft-bedrock-hacks-windows-10-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/stella-roblox-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/vex0rmillion-hack-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/scp-lockdown-roblox-game-cheats_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/daily-free-spins_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-use-cookie-stealer-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-hack-account-discord_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/vip-roblox-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-earn-free-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-robux-hack-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-rewards-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-change-your-roblox-password-when-you-are-hacked_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-today-ios_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-free-version_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/cheat-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-hack-merder-mistery-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-tool-india_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
`font_00_sfnt_off000034de.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x34DE	22508 bytes
SHA-256: `7faeceef9f30a1ae3c52e9047cd5ad55a8d68cba95765b7c6e2fce11dcc7e443`
`font_01_sfnt_off00006667.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6667	19200 bytes
SHA-256: `92ba4d9be554fb736b9e7b1235b09796ba3046a264d1052683216498d49e4302`

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