PDF malware analysis — malicious · d82db63aab86d4a5

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 14:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 125ebb7614dca155e93dddcb61dff6eb SHA-1: 30d6ffb62df9968c6ac5c033e91752131e455187 SHA-256: d82db63aab86d4a5e7d92f498f07886014c072f887c5f8684359f5f6b5ab7f19

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document employs a fake CAPTCHA lure to deceive users into performing an action, likely to download or execute a malicious payload. The embedded URL points to a resource related to game hacks, suggesting a lure for free in-game currency or items. While no scripts were directly extracted, the PDF structure and heuristics indicate malicious intent, potentially involving JavaScript for exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-free-stuff-catalog-game-hack
- http://library.atim.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdf
- http://library.atim.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdf
- http://library.atim.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdf
- http://library.atim.ac.id/repository/robux-earning-websites_GM431946152.pdf
- http://library.atim.ac.id/repository/coin-master-hack-tips_GM406889139.pdf
- http://library.atim.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdf
- http://library.atim.ac.id/repository/free-robux-codes-2021_GM431946152.pdf
- http://library.atim.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdf
- http://library.atim.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
- http://library.atim.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdf
- http://library.atim.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdf
- http://library.atim.ac.id/repository/coin-master-online-free-spin_GM406889139.pdf
- http://library.atim.ac.id/repository/hack-roblox-kewlaid_GM431946152.pdf
- http://library.atim.ac.id/repository/coins-master-hacks_GM406889139.pdf
- http://library.atim.ac.id/repository/minecraft-free-download-windows_GM479516143.pdf
- http://library.atim.ac.id/repository/roblox-executor-free_GM431946152.pdf
- http://library.atim.ac.id/repository/minecraft-pe-free-download_GM479516143.pdf
- http://library.atim.ac.id/repository/coin-master-hack-pc-download_GM406889139.pdf
- http://library.atim.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdf
- http://library.atim.ac.id/repository/free-robux-only-username_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005056.bin` `9675647064f6ca110ab8e96c377f19f499f28d71bb6bcfdca440c6b848de5814`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5056	26024 bytes
`font_01_sfnt_off00008d34.bin` `1c8c6a57b6693fdf9b98f5d272fb196a2da9f524138677fe741c3867aeebb077`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D34	18708 bytes

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