PDF malware analysis — malicious · 45e43e4f7c7562ce

MALICIOUS

PDF

40.9 KB Created: 2021-05-13 14:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 537b59cbe3c14b3437b06d492f989906 SHA-1: a9d89940ea16290bf532549c946cce665cb956da SHA-256: 45e43e4f7c7562ce873951a48e2aa2c15cd271c497700ef8a570ce6d6edc8428

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 0.9971

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/gold-cards-coin-master-hack-game-hack PDF link annotation
- http://westt.com.br/ckfinder/userfiles/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/minecraft-server-hacks_GM479516143.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/free-vip-roblox_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
- http://westt.com.br/ckfinder/userfiles/files/my-roblox-avatar_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
`stream_003_off0000474c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x474C	24136 bytes
SHA-256: `eb5893a04573acc302f2fb347b46f663d244c0a78830801ef01d0fb04eacb9e3`
`font_01_sfnt_off00007e58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E58	17964 bytes
SHA-256: `5e7e042928fe04657102bb84442be0bc4eaf21c7bcdf31e92a05fff18f488254`

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