PDF malware analysis — malicious · b66b4a428b6f844a

MALICIOUS

PDF

43.0 KB Created: 2021-05-16 12:15:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: f1f4a7371013ced2a648e445084d0071 SHA-1: 5347ecafea01951beea93ad116a678873c2b4297 SHA-256: b66b4a428b6f844aa975c8192ad59bee5df5d749af224c40bc8f2a1115f4c4a5

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document presents a fake CAPTCHA to trick the user into interacting with it, likely to initiate a download. The presence of multiple URLs, including one pointing to a potential exploit or malware download site, supports this. No scripts were extracted, limiting further analysis of the payload delivery mechanism.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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/free-roblox-acc-game-hack
- https://www.aevasia.com/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-stuff-on-roblox-2021_GM431946152.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/mcpe_GM479516143.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-minecraft-skins-ps4_GM479516143.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-spins-coin-master-links-twitter_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-app-free-download_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-robux-stream_GM431946152.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/claim-coin-master-free-spins_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/minecraft-115-2-hacks_GM479516143.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/minecraft-skins-download-free_GM479516143.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/20210-robux_GM431946152.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/free-shields-coin-master_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/is-there-a-free-version-of-minecraft_GM479516143.pdf
- https://www.aevasia.com/uploaded_files/userfiles/files/2021-free-spins-coin-master-link_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004b06.bin` `ab230fc97810f98b2a49ca6f7bfc7562091f7d62a3818219deef02c086fb37b6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B06	25864 bytes
`font_01_sfnt_off000086c6.bin` `74db3e5e7aeb6f0756448051187db7defe34e7c9b7f0bab0dc8e4ffe2ac72fee`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86C6	17948 bytes

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