PDF malware analysis — malicious · 19622322855c1f6a

MALICIOUS

PDF

35.9 KB Created: 2021-07-04 07:30:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: caa6b43c74ffd320a866f42ee468a52c SHA-1: 0f4923a662bad93a2952b175bda5b2ebc7ee0baa SHA-256: 19622322855c1f6a89430b3ba0284f58bb5eda5bac8b16df32589bfadaa14979

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to websites that promise game hacks and free in-game currency, such as 'coin-master-daily-free-spins-2021-game-hack'. The presence of these lures, combined with a high ML classifier score, indicates a malicious intent to deceive users into visiting potentially harmful sites. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

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.co/app/406889139/coin-master-daily-free-spins-2021-game-hack PDF link annotation
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-coin-master-credit_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-accounts-with-bc-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/go-to-this-website-for-free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/hacking-the-game-the-streets-on-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-robux-hack-2021-october_GM431946152.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-pc-2021-not-patched_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/robux-hack-v6-5-pastebin_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-codes-deutsch_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/do-surveys-for-free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-redwood-prison-hacks_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_off00003369.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3369	23096 bytes
SHA-256: `499f57abb340db7b5a463acede93a2feb90504b3baa9a1a74626ec42e2a25c5d`
`font_01_sfnt_off00006758.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6758	19000 bytes
SHA-256: `528a935dd58865e4a106a1d117939a17801f064f5f0487dbd1677077be344488`

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