PDF malware analysis — malicious · 7889ff7c22750497

MALICIOUS

PDF

49.0 KB Created: 2021-06-07 20:10:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1671dfaad4ed207e2513ae6c757f3839 SHA-1: 096d3c60fdf230b7a47de6b2a3006ddf9447024c SHA-256: 7889ff7c227504972d714e8019449217e09e4703cf939ce99a16194e4c9c8399

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 0.9796

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.tw/app/431946152/how-to-make-shirts-in-roblox-for-free-game-hack PDF link annotation
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-codes-september-2021_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-get-builders-club-for-free-roblox_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/este-es-el-unico-hack-de-robux-funcionando_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-make-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-com-free_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/google-free-games-roblox_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/free-muscle-t-shirt-roblox_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/how-to-earn-free-robux-quick_GM431946152.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
- https://www.intercraftgallery.com/uploaded_files/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000055a8.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x55A8	25580 bytes
SHA-256: `bc63d514111e6478eba1cd46b228ea758a5d1a96e2b1481bdfe3f48667159d3f`
`font_01_sfnt_off00008e66.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E66	3464 bytes
SHA-256: `8e24205afdd13dcdea98f8150ef77dee4030e0e50a7c748783d1b4598e034a20`
`font_02_sfnt_off00009a9c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A9C	19096 bytes
SHA-256: `960ade20f0c80023956d5a1cc009d515e296770373490d5bef3204b919c0fd00`

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