PDF malware analysis — malicious · d551cbd3baea8961

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 00:30:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 091f900cd6a82235146db146161924a1 SHA-1: 87bb23f99f43a4065150ad14128d329e67f720d4 SHA-256: d551cbd3baea89617d353cb0924675564b5794a0adc2856ed2ae84cbef17edcf

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/free-coins-coin-master-haktuts-game-hack PDF link annotation
- http://ellobo.com.ua/ckfinder/userfiles/files/tiktok-free-without-downloading_GM835599320.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-offers_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-apk-hack-unlimited-robux-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/bebe-rexha-i-got-you-cheat-codes-remix-roblox-id_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/00-hacker-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-premium_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-models-on-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-premium-roblox-accounts_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/earn-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/robux-codes-real-free_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-the-crazy-elevator-free-toilet-dhlc_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-minecraft-com_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-no-hack_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_off00002ec7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EC7	23216 bytes
SHA-256: `ec719bd49771ee29adc36064e2fee7899d1b8c879bd1ef17d167fbfa9bbb5f47`
`font_01_sfnt_off00006318.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6318	18308 bytes
SHA-256: `c10b2ce2116ce86515ac537777e6aa729f43e458fc79ee6425be9f5ece8a010a`

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