PDF malware analysis — malicious · 4e4dbc73eacf1be3

MALICIOUS

PDF

31.9 KB Created: 2021-07-06 16:52:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: c6987b8168a93e0057692f6b1be19a5f SHA-1: 4efec7aa72b9b0e4c5a80522b2371532cec0311b SHA-256: 4e4dbc73eacf1be3d20fd904d6a43437c345d5bb18c1e6c57b8dcdf302944720

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase, directing users to websites that promise game hacks and free in-game currency. The primary lure is for 'Coin Master Free Coins' and Roblox-related hacks. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to redirect users to malicious or scam websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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-coins-game-hack PDF link annotation
- http://www.arichuna.com/images/files/free-roblox-accounts-with-obc-lifetime-2021_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/fbchampion_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/roblox-ninja-head-for-free_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/free-minecraft-printables_GM479516143.pdfIn PDF document text
- http://www.arichuna.com/images/files/free-robux_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/roblox-blox-pice-hacks_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/roblox-hack-script-executor_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/roblox-hack-robux-apk_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/black-wings-roblox-free_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.arichuna.com/images/files/roblox-free-pets_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/roblox-server-crash-hack_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- http://www.arichuna.com/images/files/www-roblox-com-robux-free_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_off00002993.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2993	22264 bytes
SHA-256: `8a819a615574cf893d0ce58a3958cc43daf6bcc36ad4d59b9f520bf3e81cabe2`
`font_01_sfnt_off00005af9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AF9	17996 bytes
SHA-256: `2ec206c530faa3d40eac36f14655b3e9b935e9ff12c648634e177d5bc9421463`

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