PDF malware analysis — malicious · 829dedf93f6c2898

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 12:24:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: a7905b17b90180e0bd8255b43c1e213f SHA-1: cac7ce92e04beeb6ca8d5cf50bc827b0cbbf70c8 SHA-256: 829dedf93f6c28984e586d72ef567cd83f0e781fca906c31e07da21e0d88644d

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/free-robux-codes-no-human-verification-game-hack PDF link annotation
- https://lamgiangservice.com/ckfinder/userfiles/files/alone-roblox-free_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/free-hair-roblox_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/free-stuff-for-roblox-2021_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/comment-hacker-roblox-pc_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/coin-master-hack-online-pc_GM406889139.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/roblox-obc-hack-download_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/roblox-studio-free_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/how-to-hack-diamonds-roblox_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
- https://lamgiangservice.com/ckfinder/userfiles/files/coin-master-hack-apk-2021_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
`font_00_sfnt_off00002f2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F2D	22000 bytes
SHA-256: `c3e6c196b5fb93e9fd3fb4f6911f619082fba2b6320c4bd1700b96a95e481276`
`font_01_sfnt_off0000600d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x600D	19508 bytes
SHA-256: `2dfde449b123a820f71ecd143a07ff41e89d4c72f15aa4e6fc945965a2c79889`

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