PDF malware analysis — malicious · 6fff70f4a4d52fc3

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 19:01:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 270982b7f47b9bc207fa8d0502474d34 SHA-1: dbf5e5866d07fa1ff20b60643a103cdf7ca6dd50 SHA-256: 6fff70f4a4d52fc3a6fe34c55e30fa82fcf62179d29d99dbff828ed94cc82b0d

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 0.9971

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 https://netcdn.xyz/app/406889139/coin-master-free-coin-hack-game-hack PDF link annotation
- http://mountain.mn/uploads/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://mountain.mn/uploads/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- http://mountain.mn/uploads/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/jailbreak-script_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://mountain.mn/uploads/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/coin-master-bonus_GM406889139.pdfIn PDF document text
- http://mountain.mn/uploads/files/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
- http://mountain.mn/uploads/files/free-robux-apk_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
- http://mountain.mn/uploads/files/coin-master-pc-hack-tool_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
`stream_003_off00004c60.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C60	25040 bytes
SHA-256: `1af6e7a102e29fc44743e8c5c461c73c578b8e758fe6908468c7748baa8577fd`
`font_01_sfnt_off00008612.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8612	17880 bytes
SHA-256: `9d1f455011f0aa7862855f259ab9ea2efa3be9ec050c3ec97e4c793879e57b5c`

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