PDF malware analysis — malicious · 2ddca566cb5d88aa

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 06:20:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 7b6e35465a5738bb61883143a69569eb SHA-1: 1aa13deda228cdea65fbb7bab6d18399db57df47 SHA-256: 2ddca566cb5d88aa0e258ca56c6c56b38d2d991e8210c404ebdcc49c375a8ff6

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The document displays a fake CAPTCHA to lure the user into clicking a link, which is a common social engineering tactic. The embedded URL and numerous other URLs point to sites offering game hacks or cheats, suggesting a lure for potentially unwanted or malicious software downloads. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-spin-hack-2021-game-hack PDF link annotation
- https://www.similar.com.tw/upload/files/withdraw-robux_GM431946152.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/minecraft-apk-114-4_GM479516143.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/real-robux-generator_GM431946152.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/robux-claimer_GM431946152.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
- https://www.similar.com.tw/upload/files/play-roblox-free-online_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049fc.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49FC	24700 bytes
SHA-256: `1c4607806841ae71507bdde68f55c9005df6a4faa2c1127ca9f2f07e083d2a70`
`font_01_sfnt_off000082d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82D0	18296 bytes
SHA-256: `eaa60ab3b9dbdc46d7aef4d77b4227c1d0aeb4180c3635ae77be6ae4ebf58c24`

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