PDF malware analysis — malicious · 599fddd8ffaf0597

MALICIOUS

PDF

35.1 KB Created: 2021-07-08 21:17:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 21e50d1d4d5ee8bbf9724a68b325732c SHA-1: 2e4accd8b0783adf3c13d07f1f63e525072aedf8 SHA-256: 599fddd8ffaf05970a2faf603c35b65e436a220f157d14d7cd823aba655b74a4

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/406889139/free-spins-and-coins-com-game-hack PDF link annotation
- https://www.stylafik.in/uploaded_files/userfiles/files/hack-2021-roblox-ap_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-groups-on-roblox_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/good-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/ricegum-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/rbxcity-free-robux_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/minecraft-hacks-list_GM479516143.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/hack-coin-master-online_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/how-to-get-free-robux-pastebin_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/robux-rewards_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/roblox-friends-hack_GM431946152.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.stylafik.in/uploaded_files/userfiles/files/free-robux-only-username-no-human-verification_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
`font_00_sfnt_off000032ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32AD	22976 bytes
SHA-256: `400b60fade56079f9c880a3fdd192caeefc962012b4ee169735847dc8ea63159`
`font_01_sfnt_off00006640.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6640	18504 bytes
SHA-256: `1fd8ebdda92b297a515e174869cd147c0798f4867b2b88ca6af1ff2f07f5dfbe`

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