PDF malware analysis — malicious · faca090bd529ce51

MALICIOUS

PDF

46.3 KB Created: 2021-05-30 19:36:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 0f884e30ce3246eb217b94935cbc3662 SHA-1: d028f4e1e40859ba4566efb1e98305c48ad0e086 SHA-256: faca090bd529ce518df820eb6f250f5424cf30413f864cca9460aec5fdbe671a

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or verification prompt to trick the user into clicking a link, likely to download a secondary malicious payload. Multiple external URLs were extracted, including one pointing to a potential download hosted on netcdn.xyz. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9833

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/479516143/minecraft-free-app-game-hack
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-robux-giveaway_GM431946152.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-minecraft-games-for-kids_GM479516143.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-coins-coin-master-2021_GM406889139.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/rblx-gg-free-robux_GM431946152.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/minecraft-bedrock-free_GM479516143.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/games-that-give-you-free-robux_GM431946152.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/get-minecraft-windows-10-free_GM479516143.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-coin-master-spins-link_GM406889139.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-daily-spins-coin-master_GM406889139.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/ways-to-get-free-robux_GM431946152.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/minecraft-on-computer-free_GM479516143.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021_GM431946152.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/free-tiktok-likes-and-followers_GM835599320.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/minecraft-for-free-on-phone_GM479516143.pdf
- https://www.atuweawani.org/wp-content/uploads/fsqm-files/how-to-get-free-minecraft-skins_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_off0000463b.bin` `78f672d1ace900605285b2ea635a2814829a42ac3f3c7564fd927031ed844e62`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x463B	31376 bytes
`font_01_sfnt_off00008b07.bin` `96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B07	2820 bytes
`font_02_sfnt_off000094a7.bin` `e23e7214a96fe4b3d719dc72cd7ebffceaaf9130bd2cd2fd107204a9a2f0c3c7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94A7	17744 bytes

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