PDF malware analysis — malicious · 806ef0fa29bdcace

MALICIOUS

PDF

44.6 KB Created: 2021-05-13 04:01:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 1d2edc6eb8d3f2ac0e09cca817736445 SHA-1: 1eadb2fb9700cd4741677f8e01ebb2c824ec1f38 SHA-256: 806ef0fa29bdcace18d1d8a0660645a9ca98ee8fa6c48650a1b5ca4213bed5ef

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a PDF document that displays a fake CAPTCHA, a common social engineering tactic to lure users into clicking malicious links. The document contains an embedded URI pointing to a URL that likely serves as a download or redirect to further malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/roblox-sign-in-free-game-hack
- https://www.harfa.hr/files/spin-and-coin_GM406889139.pdf
- https://www.harfa.hr/files/boku-no-roblox-hack_GM431946152.pdf
- https://www.harfa.hr/files/coin-master-hack-game-download-ios_GM406889139.pdf
- https://www.harfa.hr/files/minecraft-auto-miner-hack_GM479516143.pdf
- https://www.harfa.hr/files/minecraft-survival-free_GM479516143.pdf
- https://www.harfa.hr/files/multiplayer-master-hack-coins_GM406889139.pdf
- https://www.harfa.hr/files/coin-master-card-link-free_GM406889139.pdf
- https://www.harfa.hr/files/can-i-play-roblox-for-free_GM431946152.pdf
- https://www.harfa.hr/files/coin-master-hack-pc-2021_GM406889139.pdf
- https://www.harfa.hr/files/free-robux-cards_GM431946152.pdf
- https://www.harfa.hr/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdf
- https://www.harfa.hr/files/how-to-get-free-robux-without-verification_GM431946152.pdf
- https://www.harfa.hr/files/free-robux-come_GM431946152.pdf
- https://www.harfa.hr/files/coin-master-get-free-spins_GM406889139.pdf
- https://www.harfa.hr/files/minecraft-classic-free_GM479516143.pdf
- https://www.harfa.hr/files/como-hackear-coin-master_GM406889139.pdf
- https://www.harfa.hr/files/how-do-you-get-free-robux_GM431946152.pdf
- https://www.harfa.hr/files/free-robux-glitch-2021_GM431946152.pdf
- https://www.harfa.hr/files/how-to-get-free-followers-on-roblox_GM431946152.pdf
- https://www.harfa.hr/files/claim-gg-free-robux_GM431946152.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_off0000483b.bin` `a1f1e31b88ea723cd306556305f0231e9d15d36c3eaae38b292dab71849c963c`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x483B	24896 bytes
`font_01_sfnt_off0000818b.bin` `4ac6997e1e67e0f6db5782458f29ed49154381a9c55bb0def8a7861581808b4d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x818B	2928 bytes
`font_02_sfnt_off00008ba9.bin` `0c6b136d59097e1a689858911fb48c20bb16f920676ba78856ab345b09e68bef`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BA9	18356 bytes

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