PDF malware analysis — malicious · 14c976886cbc609e

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 00:31:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 245e385cfb867493e39fb73d5102051a SHA-1: 7a87bc82b340e1bbb425a1a7c35576b23130679c SHA-256: 14c976886cbc609ef4dd7bede77d7739befb5250ae9151cdf1a12ceebffd1c72

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF files related to game hacks and cheats. The presence of a 'Download Now' lure and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading further malicious content. The document body, though partially corrupted, contains references to game hacks and URLs, reinforcing the phishing lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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-hack-xyz-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-uk_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-coins-coin-master-today_GM406889139.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-free-spins-apk_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/100-free-spins-coin-master_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_off000047fb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47FB	25956 bytes
SHA-256: `921864da21e96acf1d8dda6726f9538593f80569d2ee3f5e7b18dbd05e979af2`
`font_01_sfnt_off0000836a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x836A	18204 bytes
SHA-256: `eb378c11d4c3edf43fd4a317fe896922564aeaa66921672c4d59ab66e1a3bbf9`

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