PDF malware analysis — malicious · 847367707d12a2b3

MALICIOUS

PDF

47.9 KB Created: 2021-06-03 06:05:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 0305f5e47b41c958a3c79e0e5e6b4525 SHA-1: 4881cbfe2588bb1211294362b80c1e80f7325e8c SHA-256: 847367707d12a2b3a913e4f35fdc3b32704d794cf386272cc464a95da34fbc43

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting "Coin Master Free Stuff". The embedded URL, https://netcdn.online/app/406889139/coin-master-free-stuff-game-hack, is the primary IOC. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it's designed to trick users into downloading potentially malicious content or visiting a phishing page.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/coin-master-free-stuff-game-hack PDF link annotation
- https://www.naizak.com/uploaded_files/userfiles/files/pokemon-go-vs-free-fire_GM1094591345.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/free-tiktok-followers-no-downloads_GM835599320.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/free-coins_GM406889139.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/javascript-free-robux_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/roblox-avatar-tester_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.naizak.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000053bd.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53BD	24652 bytes
SHA-256: `830469681d11c5386e5185315229ef3d355af8d7073fdf3d1b078126928004e2`
`font_01_sfnt_off00008c2e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C2E	4020 bytes
SHA-256: `dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5`
`font_02_sfnt_off000099b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99B6	17848 bytes
SHA-256: `49970788d519349fbd5ba6badf06c324563f4794a9a5c1e41d0627a31815ac32`

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