PDF malware analysis — malicious · f8ee8d459d37225e

MALICIOUS

PDF

46.4 KB Created: 2021-05-16 16:21:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: dd7f4a0f28e13d5f238276e1a32a8e26 SHA-1: c7ca6be8d15fa6bf1210e1ab1a5bf123d2ad3cb1 SHA-256: f8ee8d459d37225e57638fd2f01ef9bb9aad17ce7a33a36bc4580f736aafa5a0

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free spins' and 'game hacks' to entice users to click on a malicious URL. The primary URL, https://netcdn.xyz/app/406889139/coin-master-free-spins-23-march-2021-game-hack, is identified as a redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content or initiate downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

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-23-march-2021-game-hack PDF link annotation
- https://www.stadtbesichtigungen.de/images/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/free-robux-instantly_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/roblox-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/coin-master-cheat-free_GM406889139.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://www.stadtbesichtigungen.de/images/roblox-free-no-download_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
`font_00_sfnt_off00004bcd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4BCD	26304 bytes
SHA-256: `7b9e1c896a49796aef2079aa2472033c1f735a9e7cdfc3aaae66ed41f91e8641`
`font_01_sfnt_off00008816.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8816	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off000091c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91C8	18628 bytes
SHA-256: `ee10560f037836a310effba06f8e2a452031a98d457cdddaa4693c2fbbf13476`

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