PDF malware analysis — malicious · f218063a4b5f5dbe

MALICIOUS

PDF

45.2 KB Created: 2021-05-12 15:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d6a9840ed50aa75d9b2093bfb45b2e66 SHA-1: ad96805fe1a9966766a5e1abf5d500cfedf8e023 SHA-256: f218063a4b5f5dbe5ded0660076c49a00b1ae80f972659aac10e205c2be4c9a8

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document contains lures for free in-game currency and cheats, a common tactic for distributing malware or conducting phishing. The presence of embedded URLs pointing to suspicious domains, combined with a critical heuristic firing for 'Secret Recovery Lure', indicates a high likelihood of malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it may attempt to download or redirect the user to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9551

Heuristics 4

Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE

Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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/free-coins-coin-master-daily-game-hack
- https://estalagemmonteverde.com.br/images/get-me-robux_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/how-to-get-robux-for-free-2021_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/how-to-free-robux_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/minecraft-dungeons-free_GM479516143.pdf
- https://estalagemmonteverde.com.br/images/coin-master-hack-apk-download-2021_GM406889139.pdf
- https://estalagemmonteverde.com.br/images/free-robux-no-human-verification-2021_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/aimbot-exe-roblox_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/coin-master-spin-cheat_GM406889139.pdf
- https://estalagemmonteverde.com.br/images/roblox-free-roblox_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/roblox-hacks-and-cheats_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/minecraft-114-4-download-free_GM479516143.pdf
- https://estalagemmonteverde.com.br/images/coin-master-free-spins-8-14-2021_GM406889139.pdf
- https://estalagemmonteverde.com.br/images/minecraft-story-mode-free_GM479516143.pdf
- https://estalagemmonteverde.com.br/images/free-robux-generator-codes_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/free-robux-come_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/coin-master-heaven-links-free-spins_GM406889139.pdf
- https://estalagemmonteverde.com.br/images/does-roblox-premium-expire_GM431946152.pdf
- https://estalagemmonteverde.com.br/images/hack-coin-master-apk-32-download_GM406889139.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_off00004c5b.bin` `9985f8a3a786833455d90404a1a4ce7ae8fb8d8f03cfd4b015187baa117061ed`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C5B	25172 bytes
`font_01_sfnt_off00008524.bin` `381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8524	2824 bytes
`font_02_sfnt_off00008ec6.bin` `1e224f5f91abe618aa90885726d1546ed761136b94692ecd0d001fc6fdb96963`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8EC6	18132 bytes

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