PDF malware analysis — malicious · cec249cf26fb2fce

MALICIOUS

PDF

33.9 KB Created: 2021-07-09 19:01:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 468efcb120d2cf93a4f178bcbe8cbaf2 SHA-1: 57f6f2b9ed2b2e4c0677f59dd152dd1884c4a132 SHA-256: cec249cf26fb2fce384c4229cef6bec22f50ef517b4978bf27f7d58e44dcbd61

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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 http://netcdn.tw/app/431946152/how-to-become-a-hacker-in-roblox-game-hack PDF link annotation
- http://www.mucinvitinh.vn/public/images/image_uploads/files/high-school-life-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-ro-hero-academia-hack_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/dark-dominus-roblox-codes-free_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/free-robux-promo-codes-roblox_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/hack-de-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/give-me-free-robux_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/get-free-face-roblox_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/roblox-console-hack-robux_GM431946152.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-free-master_GM406889139.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/wurst-client-download_GM479516143.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
- http://www.mucinvitinh.vn/public/images/image_uploads/files/minecraft-pe-hack-client_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
`font_00_sfnt_off00003061.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3061	21428 bytes
SHA-256: `071900b4cb029ec482468096d7383445f947bd0b559b79b2cfacd6b6c09407ba`
`font_01_sfnt_off00005f41.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F41	19080 bytes
SHA-256: `743517270bf20e3fdbac5f31fc5184e0e8be1cfb370cc187773a8eda3f974f51`

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