PDF malware analysis — malicious · c626e8dc0e4e8381

MALICIOUS

PDF

46.6 KB Created: 2021-06-13 21:19:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: fd0351aea895d893f46f2bd1901dcb7e SHA-1: c775ffde8bee89df13244f084ae6bc826c68d9ca SHA-256: c626e8dc0e4e8381cba13a2a632102599e712bf00cf343d8e8034ede2bbf06d7

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document displays a fake CAPTCHA lure to trick users into downloading a payload from the embedded URL http://netcdn.co/app/431946152/roblox-teasure-hunt-simulator-hack-game-hack. The ML classifier also flagged this PDF as malicious. The presence of multiple PDF_URI and EMBEDDED_URL heuristics indicates an attempt to redirect the user to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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 http://netcdn.co/app/431946152/roblox-teasure-hunt-simulator-hack-game-hack PDF link annotation
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/win-2021-free-robux_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/script-for-free-admin-on-roblox_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/dominus-in-roblox-free_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-level-7-executor-free_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-cheat-engine-duplicate-assassin_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/hack-fool-roblox_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-legendary-swords-rpg-hacks_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tiktok-bots_GM835599320.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-parkour-hack-june-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-console-inspect-command-hack_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/tiktok-likes-free_GM835599320.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/italwhts-the-best-free-horror-games-on-roblox_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/como-conseguir-robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-hack-robux-android-1_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/rbx-fre-robux_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-exploits-website-downloads-roblox-2021_GM431946152.pdfIn PDF document text
- https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-febuary-2021-no-waiting-times_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004852.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4852	26208 bytes
SHA-256: `e44f3ac243ce07e715ba4508a12b16660c6908e188e261e37c885f9db9f0d582`
`font_01_sfnt_off000084f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84F3	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off00009205.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9205	18808 bytes
SHA-256: `54bbdecf92b10dc8e38c89cded71539079f36dae174bc8ec92afab6b33e46afb`

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