PDF malware analysis — malicious · 19e94dc5a5934e45

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 17:44:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 74a4ce60e75e8cdc00725e44f407a5b0 SHA-1: dc2a2b0fc7228ce189abcd72556cc746b682925b SHA-256: 19e94dc5a5934e45b1e9ae0a5ea47481f7dc72aa9b1adfb7ed395d46fd7fb6ed

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a link. This link, such as https://netcdn.xyz/app/406889139/coin-master-free-spins-cash-game-hack, likely leads to the download of a second-stage payload. The ML classifier strongly indicated maliciousness, supporting the observed social engineering tactics.

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-free-spins-cash-game-hack PDF link annotation
- https://lpk-citranusantara.com/ckfinder/userfiles/files/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/earn-robux-sites_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-coin-master-s_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-roblox-svg_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-hack-xyz_GM406889139.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_off00004b38.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B38	24900 bytes
SHA-256: `61d2c2d882a4dd7720afa43ba4adb61370a7f7ae9827053b08d250d02b6ac164`
`font_01_sfnt_off000084d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84D9	18052 bytes
SHA-256: `9bd717b0e04310867829ca511b483eebbd60050a5b8b31305794fbcb17f8519e`

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