PDF malware analysis — malicious · c6340517eb88b2a1

MALICIOUS

PDF

43.8 KB Created: 2021-05-13 01:41:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: ca8ba7cc8a1ab4ce527a04388b309b1b SHA-1: cb28de449969e13c8647d843352f57a3553a7c2c SHA-256: c6340517eb88b2a16e6806affa6452910b40b3be1c8076cce584eb0249c5590a

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents itself as a lure for obtaining free in-game currency or premium features for games like Roblox and Coin Master. It contains a fake CAPTCHA or human verification prompt, encouraging users to click on embedded links. The primary external URI, https://netcdn.xyz/app/431946152/how-to-get-roblox-premium-for-free-game-hack, likely leads to a malicious payload or phishing site.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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-roblox-premium-for-free-game-hack PDF link annotation
- https://zabota-kashira.ru/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/minecraft-handbook_GM479516143.pdfIn PDF document text
- https://zabota-kashira.ru/images/coinmaster_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/coinmaster-fan-page_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/claim-gg-free-robux_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/worst-roblox-avatars_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/roblox-free-robux_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://zabota-kashira.ru/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
- https://zabota-kashira.ru/images/free-robux-promo-codes-2021_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_off0000492a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x492A	28620 bytes
SHA-256: `4c9fc50e3d581b188c524a02e9213cfdc645bff8fb7b12b9565f03dfe8dc4db7`
`font_01_sfnt_off0000872e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x872E	18888 bytes
SHA-256: `80296d3e833823be7f1e21571c517a003a5ed5633da55eadbe5c2ecc0576c034`

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