PDF malware analysis — malicious · 2c45fae397fbccef

MALICIOUS

PDF

34.8 KB Created: 2021-07-09 23:52:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: b092ad76c868f14f76a3ac728002df79 SHA-1: 17c62528fb6b2a5cc2859db97167d2330692544d SHA-256: 2c45fae397fbccef01f1dc1d0dff332146bc0c7e06579f0a97eaaa814cd6920a

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/431946152/free-robux-easy-and-fast-game-hack PDF link annotation
- https://cosmosocean.com.tw/upload/files/roblox-e-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/master-coin-free_GM406889139.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/shirt-roblox-2021-free-dowload_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-videos_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/bux-free-robux_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/hack-team-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/pokemon-go-free-event-box-april-2021_GM1094591345.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-money-in-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/youtube-roblox-broken-bones-cheat_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/800-robux-for-free-roblox_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-roblox-accounts-and-passwords-2021_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-customize-roblox-character-free_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://cosmosocean.com.tw/upload/files/robux-gift-card-online-free_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_off00002ef6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EF6	22980 bytes
SHA-256: `0aacd5a33e655955b949b0b36165d686e5fd221db0d3dd221edb4b2d3475a5ac`
`font_01_sfnt_off0000628f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x628F	19172 bytes
SHA-256: `e478a87f33177f62414f41e8523dd2647ca5964d0e32b68d8766533df2c128b7`

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