PDF malware analysis — malicious · 67f2f70c7e250dab

MALICIOUS

PDF

35.0 KB Created: 2021-07-08 07:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 60bf5cffffe0c9a4307ac39fa7847243 SHA-1: dabf89419d3e5535a244c5c236ab66f5402ebfae SHA-256: 67f2f70c7e250dabf65ab62e51a501c424b2a3265035a29ad2e2786ea69d7890

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-earn-robux-for-free-2021-game-hack PDF link annotation
- http://camphat.com.vn/upload/UploadFiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/tiktok-international-free-download_GM835599320.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-4k-robux_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/www-roblox-com-free-games_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/is-it-possible-for-someone-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/just-create-free-robux_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/mc-update_GM479516143.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/get-free-robux_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/boku-no-roblox-remastered-hack-script-2021_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/tiktok-free-like-bot_GM835599320.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/roblox-hack-scripts-2021_GM431946152.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
- http://camphat.com.vn/upload/UploadFiles/files/how-to-make-a-modded-minecraft-server-for-free_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_off00003085.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3085	22668 bytes
SHA-256: `b08a56c82bdf759a1b4b344ca581ec7e29d31338d7e0f3e6b653647cfa1ef065`
`font_01_sfnt_off00006315.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6315	19284 bytes
SHA-256: `b399ae733d7917559aeb38653f56690fc8d0842846df9d5376906f0eed96920f`

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