PDF malware analysis — malicious · 4c0d6d3eb1cbc663

MALICIOUS

PDF

44.9 KB Created: 2021-06-09 11:41:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 2846b6e590f41995aa25d304237db625 SHA-1: be7ef369736c5e4097227d9f5a57381db10c81bc SHA-256: 4c0d6d3eb1cbc6636c7eec46b5daaaf16e5090e8ec7e224ac4b53c7546432efa

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or human verification prompt to trick users into downloading further malicious content, as indicated by the 'SE_FAKE_CAPTCHA' heuristic. The embedded URLs, such as 'https://netcdn.tw/app/431946152/robux-free-roblox-code-2021-game-hack', likely lead to the execution of further stages or malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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/robux-free-roblox-code-2021-game-hack
- http://perpus.ar-rum.ac.id//repository/coin-master-hack-xyz_GM406889139.pdf
- http://perpus.ar-rum.ac.id//repository/roblox-got-talent-piano-hack_GM431946152.pdf
- http://perpus.ar-rum.ac.id/repository/roblox-font-free_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/how-to-get-robux-fast_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/can-you-get-robux-for-free_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/free-robux-hack-generator_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/roblox-free-robux-codes_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/minecraft-bedrock-free_GM479516143.pdf
- http://perpus.ar-rum.ac.id//repository/minecraft-alt-accounts-free_GM479516143.pdf
- http://perpus.ar-rum.ac.id//repository/how-to-get-free-coins-in-coin-master_GM406889139.pdf
- http://perpus.ar-rum.ac.id//repository/how-to-make-a-roblox-group-for-free_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/free-spins-and-coins-on-coin-master_GM406889139.pdf
- http://perpus.ar-rum.ac.id//repository/coin-master-hack-version-apk-download_GM406889139.pdf
- http://perpus.ar-rum.ac.id//repository/coin-master-hack-apk-download-latest-version_GM406889139.pdf
- http://perpus.ar-rum.ac.id/repository/hack-prison-life-roblox-noviembre2021_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/roblox-adopt-me-hack_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/pokemon-go-free-vs-ultra_GM1094591345.pdf
- http://perpus.ar-rum.ac.id//repository/roblox-promo-codes-2021-robux_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/roblox-group-free-robux_GM431946152.pdf
- http://perpus.ar-rum.ac.id//repository/coin-master-free-2021-spin-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_004_off00005099.bin` `ccf2e00fc43c18092aa4fd931b5c127e1dc02aac084b9ce7bec36866ae8e800d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5099	25824 bytes
`font_01_sfnt_off00008b94.bin` `4ac4715ddb6ef5ad1daa8d64c050c0be705662813bca185d7849be248d716eb0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B94	18664 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.