PDF malware analysis — malicious · 6f4a6e08e4bd2508

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 01:10:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 3b8a0f4f7048d5e408af1e4c12cb5ef2 SHA-1: f55481c67a4e0fa053bed1907164bda3179af6ec SHA-256: 6f4a6e08e4bd25085ef0f9c07eacbd72063512d95e72634fa8c0b9cd14c8fb06

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on suspicious domains and offer game hacks or currency generators. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a malicious intent to direct users to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/479516143/wurst-115-2-game-hack PDF link annotation
- https://www.vizyonproduction.com/application/uploads/assets/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-hack-download_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-working_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-wheel_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/real-robux-generator_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
- https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-without-downloading-apps_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_off000035e1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x35E1	22228 bytes
SHA-256: `b1d65cb1c1ac3bcd29a33dc06241cbf7c20a971294283eec6de88457844c6aad`
`font_01_sfnt_off00006734.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6734	18440 bytes
SHA-256: `4d36fc7f60f6eefb2ae677e2271dd32deb7a6f06da798dd8a5534483c16757df`

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