PDF malware analysis — malicious · 36befd9ff4ddf196

MALICIOUS

PDF

50.1 KB Created: 2021-06-09 12:04:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: d615f78cef03a1ca7e346aae65dbbcfa SHA-1: 5940fdb019f13d6b9a3d7daa440a3cb552962850 SHA-256: 36befd9ff4ddf196e56564b77d61ff5469271af9fcf0b1a6165230f46606c193

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, with a prominent lure related to 'game hacks' and 'free generators'. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially malicious content or download further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9789

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.tw/app/431946152/how-to-hack-roblox-accounts-2021-on-pc-game-hack PDF link annotation
- https://lesegais.ru/images/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-tiktok-likes-no-human-verification_GM835599320.pdfIn PDF document text
- https://lesegais.ru/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-stream_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/roblox-robux_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-free-online_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://lesegais.ru/images/blox-pink-robux-free_GM431946152.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_off00004fc7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FC7	29196 bytes
SHA-256: `db0bd080fb35d6e148584d32140bf258d68dc1e56d7d4fb0055246e2b17b47ab`
`font_01_sfnt_off0000905f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x905F	4504 bytes
SHA-256: `fb7095cd27e86ee42436b7ddae1e7b8297552230f557d352fecc1b114cb090d7`
`font_02_sfnt_off00009e84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E84	19144 bytes
SHA-256: `b30918057c84a760b6e1e1b9b29afa3ee5c14ff72723d61b739c1884c53dfce6`

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