PDF malware analysis — malicious · bcab7390c095e736

MALICIOUS

PDF

45.9 KB Created: 2021-05-14 18:11:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ce409e2e8564db580ef4cbd6a559086d SHA-1: e8763bdb5a038058abc81b4428373b9d66cef2c5 SHA-256: bcab7390c095e736c4aef0a8484be835a125c0c52c98db83dfb50b3da8d40b3b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with the document and potentially downloading further malicious content. The embedded URLs point to external resources that are likely hosting the actual malicious payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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/jailbreak-roblox-hack-game-hack
- https://www.colditex.com/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
- https://www.colditex.com/images/free-robux-codes_GM431946152.pdf
- https://www.colditex.com/images/coin-master-free-spin-link-daily_GM406889139.pdf
- https://www.colditex.com/images/roblox-hack-2021_GM431946152.pdf
- https://www.colditex.com/images/free-spin-and-daily-news-coin-master_GM406889139.pdf
- https://www.colditex.com/images/roblox-but_GM431946152.pdf
- https://www.colditex.com/images/coin-master-links-free-spins_GM406889139.pdf
- https://www.colditex.com/images/safe-hack-for-coin-master-android_GM406889139.pdf
- https://www.colditex.com/images/does-roblox-premium-expire_GM431946152.pdf
- https://www.colditex.com/images/coin-master-free-spins-reddit_GM406889139.pdf
- https://www.colditex.com/images/wahoogaming-co-free-robux_GM431946152.pdf
- https://www.colditex.com/images/free-roblox-toy-codes_GM431946152.pdf
- https://www.colditex.com/images/coin-master-event-hack_GM406889139.pdf
- https://www.colditex.com/images/free-robux-no-verification-needed_GM431946152.pdf
- https://www.colditex.com/images/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
- https://www.colditex.com/images/free-spins-in-coin-master-2021_GM406889139.pdf
- https://www.colditex.com/images/free-robux-no-password_GM431946152.pdf
- https://www.colditex.com/images/coin-master-game-hack-app-download_GM406889139.pdf
- https://www.colditex.com/images/free-spin-coin-master-ios_GM406889139.pdf
- https://www.colditex.com/images/coin-master-heaven-links-free-spins_GM406889139.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_off00004bba.bin` `29412775d75aaf7a90094dbb3e77a875abcf227a8edf7dccd4907c5507768bbd`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BBA	25364 bytes
`font_01_sfnt_off0000863f.bin` `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x863F	2880 bytes
`font_02_sfnt_off0000902a.bin` `47180ef6fd58f08eabdcf8de8850cf434555edaa977bcc29afa6d0c928aef64e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x902A	18468 bytes

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