PDF malware analysis — malicious · f3acf42b8387f854

MALICIOUS

PDF

45.5 KB Created: 2021-06-09 09:49:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: fff2b920cd1148956818a2cced87d706 SHA-1: 593e4304372d56f008346be606e8cf9a82569ccb SHA-256: f3acf42b8387f8545145a0276d11b754c34ea0302b378d07d545003e769fd39f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to deceive the user into interacting with it. It contains an external URI pointing to a URL that likely hosts a malicious payload. The presence of multiple suspicious URLs suggests a phishing or scamming attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/youtube-roblox-get-free-money-on-rocitizens-game-hack PDF link annotation
- http://artion.biz/images/free-robux-card-redeems_GM431946152.pdfIn PDF document text
- http://artion.biz/images/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
- http://artion.biz/images/roblox-online-free_GM431946152.pdfIn PDF document text
- http://artion.biz/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- http://artion.biz/images/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- http://artion.biz/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
- http://artion.biz/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
- http://artion.biz/images/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
- http://artion.biz/images/roblox-ban_GM431946152.pdfIn PDF document text
- http://artion.biz/images/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
- http://artion.biz/images/free-robux-clothes_GM431946152.pdfIn PDF document text
- http://artion.biz/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
- http://artion.biz/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- http://artion.biz/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
- http://artion.biz/images/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
- http://artion.biz/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://artion.biz/images/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
- http://artion.biz/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
- http://artion.biz/images/www-free-robux-com_GM431946152.pdfIn PDF document text
- http://artion.biz/images/youtbehow-to-get-free-robux-without-doing-surveys_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_004_off00004f82.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F82	26836 bytes
SHA-256: `8e1527a37d0b1fb49fd2ccebe1361972da4d6bc25752ba4b7c21601b5ff7517c`
`font_01_sfnt_off00008d6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D6D	18932 bytes
SHA-256: `f4d248ff6bd4e4419614bb7f8ceee0fffb60c2361ce8f2ba0276c14883ece322`

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