PDF malware analysis — malicious · 8e73802eda4dca7b

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 05:30:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 4833c6443ce55626eb0c14ad84963d86 SHA-1: 309dad550213ce56f9b13447e262cc6f544d24e3 SHA-256: 8e73802eda4dca7bd86fc65b155aa333f7da3f126245d3c670fd9b7352a7c6d3

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free spins, directing users to the URL https://netcdn.xyz/app/406889139/coin-master-free-spins-facebook-game-hack. This URL is flagged as a high-risk redirector, indicating a likely attempt to deliver a malicious payload or conduct a phishing attack. The presence of multiple similar URLs hosted on topkoreamart.com further supports the malicious intent.

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-spins-facebook-game-hack PDF link annotation
- https://topkoreamart.com/public/upload/files/free-robux-live_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/wurst-115_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/xray-hack_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/roblox-hack-app_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/haktuts-coin-master_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
- https://topkoreamart.com/public/upload/files/coin-master-free-2021-spin-link_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_off00004911.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4911	25092 bytes
SHA-256: `3ac9646382c5e1fe3b8b81a25a6abf8dfd0ecdead8de63e174445e75793a8bdd`
`font_01_sfnt_off00008332.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8332	18212 bytes
SHA-256: `a7d0484bdc545634c9b46f4dcbf794c30064c3aaaf3cdd537b213ac19f08a95c`

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