PDF malware analysis — malicious · 93dd41cb68588dbe

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 05:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: e95f9d00be90701262e85f56af36b0b0 SHA-1: 4f0f1e6d5648bd725fe1e74d0600426311c15e51 SHA-256: 93dd41cb68588dbeb893091a65c81e1cd6857482ed83d60ba704e86803783c29

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for game hacks, directing users to a URL that likely hosts malicious content or phishing pages. The ML classifier strongly indicated maliciousness, and the presence of multiple game-hack-related URLs reinforces this assessment. No scripts were extracted, but the document's structure and embedded links suggest an attempt to trick users into downloading further malware or revealing sensitive information.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/www-cheatsk-com-coin-master-hack-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/vip-roblox-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/give-me-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-co_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-coins-2021_GM406889139.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/pokemon-go-free-coins-hack-2021_GM1094591345.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/www-rbx-com_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-app_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/robux-free-com_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005269.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5269	24436 bytes
SHA-256: `a45f3eb98ad152538b222bfed88a25fe82b8b22fa703932a65ccdb2634d729b4`
`font_01_sfnt_off00008ae8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8AE8	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off0000949a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x949A	18504 bytes
SHA-256: `34cd0f80a144e99ec60e90584a0fe8d035c842e631b0412131c0520909d0576d`

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