PDF malware analysis — malicious · 696ed0ad2d279cf1

MALICIOUS

PDF

33.3 KB Created: 2021-07-03 18:25:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 103627c316dd6a401927191c606186cf SHA-1: f5cafcd7f3cc65bb20acc8a85573e5c015866cad SHA-256: 696ed0ad2d279cf14ed28679aa41cef8d8a0e4fd72f20096bc149c0bca5904b8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free currency' to entice users into clicking malicious links. The primary link, http://netcdn.tw/app/406889139/coin-master-free-chip-game-hack, is identified as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack aimed at driving traffic to potentially malicious or scam-related websites, likely falling under the T1566.001 (Spearphishing Attachment) initial access vector.

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/coin-master-free-chip-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/how-to-earn-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/best-free-roblox-exploit-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/hacks-on-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-free-robux-giveaway_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-roblox-generator-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-make-a-hacker-outfit-on-roblox_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/robloxhacks_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-cheat-client_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-badges-roblox-game_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-generator-without-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_off00002d8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D8A	22344 bytes
SHA-256: `bb88017e89cffcf8eab80a37075685a04b1dc8fa018605af417db0101b9c47c5`
`font_01_sfnt_off00005f56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F56	18340 bytes
SHA-256: `8ade81e28ce8b37bbf8c6334d153083f90bbf230f38b0c74cd71ceca923da60d`

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