PDF malware analysis — malicious · dcf3cc1937de7ef8

MALICIOUS

PDF

35.4 KB Created: 2021-06-19 05:59:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 9e450782a6f1c03b18e14e8217fe1a01 SHA-1: dfb7303ee83ecbd5735c8c561c8cd22eecd0a2ed SHA-256: dcf3cc1937de7ef8d5df27d5a38c4e2174ff203ea86d159e3a0fdce594730415

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are SEO-optimized and point to pages promising game cheats and free currency for popular games like Roblox and Coin Master. This suggests a link farm designed to lure users to potentially malicious websites or downloaders. 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.co/app/431946152/free-money-glitch-on-roblox-on-car-simulator-game-hack PDF link annotation
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/group-gives-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/can-i-seel-roblox-shirts-for-free_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/overhaul-roblox-free-shop_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-hack-murder-mystery-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-com_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_off0000316d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x316D	22420 bytes
SHA-256: `4030b0327034d78b4ac20bdfcf80ba56c3712d78fb337e0312fd08cd4662b899`
`font_01_sfnt_off0000633e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x633E	19816 bytes
SHA-256: `9f1f2a81946e6781e8ddbe166fa6dfa25f3e56a7fbdf5b698b52cde8653efff2`

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