PDF malware analysis — malicious · 709c77480f5f0461

MALICIOUS

PDF

42.1 KB Created: 2021-05-17 11:31:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: ccb7a1f132389541935eafa5a8ff7c15 SHA-1: 2230867e75c173f27995ed98103668c79644d954 SHA-256: 709c77480f5f046183d9d8c1b1432859d7e9229ab338f09613d37fe3258dcfca

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/coin-master-free-spins-link-today-facebook-game-hack PDF link annotation
- https://mbbs.hr/files/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
- http://mbbs.hr/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://mbbs.hr/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
- https://mbbs.hr/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://mbbs.hr/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- http://mbbs.hr/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://mbbs.hr/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
- http://mbbs.hr/files/earn-robux-com_GM431946152.pdfIn PDF document text
- https://mbbs.hr/files/free-vip-server-roblox_GM431946152.pdfIn PDF document text
- http://mbbs.hr/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
- http://mbbs.hr/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
- http://mbbs.hr/files/spin-links-for-coin-master_GM406889139.pdfIn PDF document text
- https://mbbs.hr/files/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
- http://mbbs.hr/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
- http://mbbs.hr/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://mbbs.hr/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- http://mbbs.hr/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
- https://mbbs.hr/files/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
- https://mbbs.hr/files/free-robux-link_GM431946152.pdfIn PDF document text
- http://mbbs.hr/files/original-roblox_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_off00004857.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4857	24708 bytes
SHA-256: `bacc91bfc6b90383832b61d0a91bc943df13568f2f60baa77b2842933521088a`
`font_01_sfnt_off00008155.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8155	18568 bytes
SHA-256: `976bad0f84eadf36fe6397f68da5c043a767fda9c526d6325df07f5c92c7ef85`

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