PDF malware analysis — malicious · de3d2be6ce6f3e9b

MALICIOUS

PDF

43.2 KB Created: 2021-05-11 14:32:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 400e1824f844ca455a93e878cb568a98 SHA-1: 6a223298a2b15b7ac0379a7cd4532ed52277cc5f SHA-256: de3d2be6ce6f3e9b26bfa72174a028db7ca37b90886ac1586ba7cf769f284755

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA to trick users into interacting with a malicious link, which is a common social engineering tactic. The embedded URL points to a resource likely designed to deliver a secondary payload. The ML classifier strongly indicated maliciousness, supporting the observed behavior.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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/is-there-any-way-to-get-free-robux-game-hack
- http://opac.stieimalang.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/coin-master-hack-online-2021_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/make-free-robux_GM431946152.pdf
- http://www.opac.stieimalang.ac.id/repository/roblox-studio-free_GM431946152.pdf
- http://www.opac.stieimalang.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdf
- http://opac.stieimalang.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/free-robux-that-actually-works_GM431946152.pdf
- http://opac.stieimalang.ac.id/repository/codes-to-get-free-robux_GM431946152.pdf
- http://opac.stieimalang.ac.id/repository/totally-free-coin-master-spins-2021_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/coin-master-spin-link-free_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdf
- http://www.opac.stieimalang.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdf
- http://opac.stieimalang.ac.id/repository/roblox-hack-scripts-pastebin_GM431946152.pdf
- http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-usa-2021_GM406889139.pdf
- http://www.opac.stieimalang.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdf
- http://opac.stieimalang.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdf
- http://opac.stieimalang.ac.id/repository/free-minecraft-capes-no-mods_GM479516143.pdf
- http://www.opac.stieimalang.ac.id/repository/coin-master-free-coins-and-spins-app_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_off00004a8a.bin` `125946c0ce76e5af920d07ba58be0e96f04631fc6aeca4630a6e709a772e59e9`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A8A	25112 bytes
`font_01_sfnt_off0000849f.bin` `d4b621edf5ac5f073c5a65dd804db4f1f2ad13c123c1b5ace541ce5f5c284f58`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x849F	18892 bytes

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