PDF malware analysis — malicious · d6335b10b414eed0

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 03:42:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 84a15c33a6c4c2e722ca7f0651234eaa SHA-1: 322a153bbb6c30f4e5954e81c6f99661a339214c SHA-256: d6335b10b414eed0b394c929f8335f2f64e9fcd583caef1a5b150b7d7758464d

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/www-coin-master-hack-game-hack PDF link annotation
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/robux-apk_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/can-you-make-a-shirt-for-free-on-roblox_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-tricks_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-roblox-help_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-murder-mystery-2-hack-script-pastebin_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-download-free-robux_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-jailbreak-how-to-get-a-free-level-5-engine_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/hacker-names-on-roblox_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/where-in-roblox-can-i-find-free-gems_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/roblox-hack-wallhack_GM431946152.pdfIn PDF document text
- https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-free-robux-from-the-robux-page_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_off000031ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31BA	22564 bytes
SHA-256: `a377f93a4caa9cd8a68b14f5f2dcc42adfcc1949d954dc089e8ee3af7faf24ea`
`font_01_sfnt_off00006416.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6416	18364 bytes
SHA-256: `56fe19c9a365f85bceb031ba69da7f92b878d4dc87b6111ff4a61486c3ab982f`

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