PDF malware analysis — malicious · 424e269f642395c6

MALICIOUS

PDF

46.0 KB Created: 2021-05-12 08:40:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 98ed724231c75dcf697023d779ca1fca SHA-1: e1fa65281a2757c90c65b3eb2d264d0c163f6e79 SHA-256: 424e269f642395c6e08709399c3a454c827734f868b9d599b5cbc6501ed00f70

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a primary external URI pointing to a site offering game-related downloads, likely as a lure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be part of a multi-stage attack, potentially involving password-protected archives to evade initial detection. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

Heuristics 4

Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE

Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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/431946152/roblox40.com-robux-game-hack
- http://www.cosver.nl/images/minecraft-texture-packs-free-download_GM479516143.pdf
- http://www.cosver.nl/images/toolbox-for-mcpe_GM479516143.pdf
- http://www.cosver.nl/images/free-robux-no-scam_GM431946152.pdf
- http://www.cosver.nl/images/hey-google-how-do-you-get-free-robux_GM431946152.pdf
- http://www.cosver.nl/images/coin-master-hack-pc-2021_GM406889139.pdf
- http://www.cosver.nl/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdf
- http://www.cosver.nl/images/robux-no-survey_GM431946152.pdf
- http://www.cosver.nl/images/coin-master-heaven_GM406889139.pdf
- http://www.cosver.nl/images/free-roblox-usernames-and-passwords_GM431946152.pdf
- http://www.cosver.nl/images/daily-free-spins-coin-master-2021_GM406889139.pdf
- http://www.cosver.nl/images/minecraft-servers-that-allow-hacks_GM479516143.pdf
- http://www.cosver.nl/images/robux-hacks-2021_GM431946152.pdf
- http://www.cosver.nl/images/stock-speed-coin-master-free-spins_GM406889139.pdf
- http://www.cosver.nl/images/toolbox-for-minecraft-pe-ios_GM479516143.pdf
- http://www.cosver.nl/images/oprewards-free-robux_GM431946152.pdf
- http://www.cosver.nl/images/how-to-get-free-robux-without-any-verification_GM431946152.pdf
- http://www.cosver.nl/images/coin-master-hacked-apk-download-for-android_GM406889139.pdf
- http://www.cosver.nl/images/free-robux-generator-for-roblox-2021_GM431946152.pdf
- http://www.cosver.nl/images/free-spin-and-coin-blogspot_GM406889139.pdf
- http://www.cosver.nl/images/mc-update_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004923.bin` `98d3ba34e95dde799198dea228c98938a5d2b1bbd64245979f8049c061faf7ff`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4923	26124 bytes
`font_01_sfnt_off0000867a.bin` `bab8933fc39dc331bc4c1c904a82b1432ab2e02478fa0a59453c98c5c231da8d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x867A	2956 bytes
`font_02_sfnt_off0000909a.bin` `9918e4e201cf4584f779f98ae8fff3df607e64c5e2e67c0d23409290931a1188`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x909A	18484 bytes

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