PDF malware analysis — malicious · 4dd5589e49da3f79

MALICIOUS

PDF

41.8 KB Created: 2021-05-10 20:44:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: b5288624fee0de56b5286f0e0cf70477 SHA-1: 09694cb8b8bb93a39e4e6387473f1519e6839087 SHA-256: 4dd5589e49da3f79b632ee9a78adcf10dd2a423ced37df85a42db20ba7c958e8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The document presents a fake CAPTCHA or human verification prompt, a common lure to trick users into clicking malicious links. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-free-robux-no-scam-game-hack, likely leads to a payload download or a phishing page. The ML classifier also strongly indicated maliciousness.

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/431946152/how-to-get-free-robux-no-scam-game-hack PDF link annotation
- https://donrazvitie.ru/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/play-coin-master-for-free_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/robux-gratis_GM431946152.pdfIn PDF document text
- https://donrazvitie.ru/images/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
- https://donrazvitie.ru/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://donrazvitie.ru/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://donrazvitie.ru/images/coin-master--hack_GM406889139.pdfIn PDF document text
- https://donrazvitie.ru/images/roblox-free-item-codes_GM431946152.pdfIn PDF document text
- https://donrazvitie.ru/images/blox-fun-info_GM431946152.pdfIn PDF document text
- https://donrazvitie.ru/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
- https://donrazvitie.ru/images/free-minecraft-alt-accounts_GM479516143.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_off0000485e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x485E	24112 bytes
SHA-256: `795086a734cff3341d2e3df50db181590eb148abd4502ef403c727b5d7b4f430`
`font_01_sfnt_off00007f6a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F6A	18768 bytes
SHA-256: `d1f42346170e568709c452458a32d8325f9466b63e26828f6615071549d089d8`

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