PDF malware analysis — malicious · 504a6d6ce3ee78f9

MALICIOUS

PDF

36.6 KB Created: 2021-07-04 12:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 2d5eb90ba104a6bedb0cc78ba7f38652 SHA-1: 11c6a712ef60007ac49070883290931ba0f48509 SHA-256: 504a6d6ce3ee78f956a1153b142a6ba4514f4d051f6a9db4dc39e783ffdaf724

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/coin-master-hack-version-33-2-game-hack PDF link annotation
- http://www.biochemix.com/uploaded_files/userfiles/files/secret-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/minecraft-client-download_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-things-february-2021-roblox_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/roblox-shirt-template-transparent-free-shipping_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-windows-7_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-hack-roblox-in-1-min_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-khaos_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-try-roblox-accessoryes-for-free_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-robux-hack-2021_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_off0000384e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x384E	22940 bytes
SHA-256: `ebb5cf950b2a30570a756b0f5ecc24b414fac42d5c403b028d71dcb3fc3727a2`
`font_01_sfnt_off00006bc7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BC7	18436 bytes
SHA-256: `40d4f265c6f80eacc067217a35f9691239ff8b0750ab836d6fc535a93aeb50a2`

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