PDF malware analysis — malicious · 868996ef8ebdf60c

MALICIOUS

PDF

45.5 KB Created: 2021-05-13 13:32:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 2b1248349fe6a347c576a24edd902c66 SHA-1: ce9d1c8e8635437ca3c61237bc0fed7bcf5405d7 SHA-256: 868996ef8ebdf60c66ac8d66aec9cabaab1a11e774ebb66be6f21babaf78f32c

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA to trick the user into interacting with a malicious link, likely for a scam or to download further malware. The embedded URL points to a resource related to game hacks, reinforcing the lure. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the presence of external URIs suggests a download or redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/free-promo-codes-for-roblox-2021-game-hack
- https://htdvn.com/public/upload/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
- https://htdvn.com/public/upload/files/free-minecraft-texture-packs_GM479516143.pdf
- https://htdvn.com/public/upload/files/extra-free-spins-for-coin-master_GM406889139.pdf
- https://htdvn.com/public/upload/files/free-robux-generator-for-roblox-2021_GM431946152.pdf
- https://htdvn.com/public/upload/files/claim-robux_GM431946152.pdf
- https://htdvn.com/public/upload/files/blogspot-free-spins-coin-master_GM406889139.pdf
- https://htdvn.com/public/upload/files/coin-master-level-3_GM406889139.pdf
- https://htdvn.com/public/upload/files/the-coin-master-hack_GM406889139.pdf
- https://htdvn.com/public/upload/files/coin-master-hack-spins-apk-download_GM406889139.pdf
- https://htdvn.com/public/upload/files/coin-master-free-spins--coins-2021_GM406889139.pdf
- https://htdvn.com/public/upload/files/daily-free-spins-and-coins-coin-master_GM406889139.pdf
- https://htdvn.com/public/upload/files/free-robux-images_GM431946152.pdf
- https://htdvn.com/public/upload/files/free-robux-site_GM431946152.pdf
- https://htdvn.com/public/upload/files/coin-master-100-spin-hack_GM406889139.pdf
- https://htdvn.com/public/upload/files/how-to-earn-robux-for-free-2021_GM431946152.pdf
- https://htdvn.com/public/upload/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdf
- https://htdvn.com/public/upload/files/get-minecraft-windows-10-free_GM479516143.pdf
- https://htdvn.com/public/upload/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdf
- https://htdvn.com/public/upload/files/free-coin-master-s_GM406889139.pdf
- https://htdvn.com/public/upload/files/coin-master-hacks-to-get-spins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004de0.bin` `f318547b2a27f7b0681417dce11e568be38dbdb0879d2200fc3f4a3855ab2036`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4DE0	27524 bytes
`font_01_sfnt_off00008dbc.bin` `2b6c19c1385541cbc0a307a9e655f394479c142689a532ede3fefaf993bbe264`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DBC	18936 bytes

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