PDF malware analysis — malicious · b6fc09775daec271

MALICIOUS

PDF

33.2 KB Created: 2021-06-18 10:47:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 8e579b088177002f1743e620524f99be SHA-1: 906ffec83a1be2418ed9e90e9f4fad29c5d5a4be SHA-256: b6fc09775daec2716c6136a912b280540b7de3673feff2a8681ca56d866eb0f7

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.co/app/431946152/real-robux-free-game-hack PDF link annotation
- https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-means_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/play-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/me-han-hackeado-la-cuenta-de-roblox_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-hub-free-vip-server_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/free-minecraft-mods_GM479516143.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/free-roblox-hair-boy-rainbow_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/withdraw-robux-free_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/tiny-tanks-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-hackeado-de-cuenta_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/lazy-blocks-free-robux_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-service_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/robux-free-without-offers_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-record-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/fre-robux-for-real_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/free-level-6-exploits-roblox_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/free-robux-grab-points_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/robux-hacked-generator_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-hack-client-download-2021_GM431946152.pdfIn PDF document text
- https://www.choidy.ch/wp-content/uploads/fsqm-files/roblox-free-robux-without-verification_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_off00002d26.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D26	22072 bytes
SHA-256: `802dd09376aef0fffc55bf9ec4b6c73b34c86b87514d4836fe44558f1af14a97`
`font_01_sfnt_off00005e03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E03	18604 bytes
SHA-256: `7086020cf7ca5f11d85e6b001442465ae0783d86c6ea002eca5a3ead726276b5`

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