PDF malware analysis — malicious · 8b4d844594b9e83e

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 06:22:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 173e98eb1ebd0608a2a82593adb8c450 SHA-1: d3ecd94123c3925d01c6836ed02dde993efd818a SHA-256: 8b4d844594b9e83e5a89bdeb26480d9cf5ee0522cf3e22d47f49e6a78946cfa4

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs and a document body that promotes hacking games, suggesting a lure for users to download malicious content. The presence of a large number of external links and a high ML classifier score indicates malicious intent. The document likely serves as a phishing or malware distribution vector, attempting to trick users into clicking links that lead to harmful files.

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/how-to-hack-bloxburg-on-roblox-game-hack PDF link annotation
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/ash-greninja-remix-on-roblox-free_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-hack-no-download-gui_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/best-hacked-client_GM479516143.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/cheat-roblox-client_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-hack-2021exe-download_GM431946152.pdfIn PDF document text
- https://distribuidorademoveis.com.br/ckfinder/userfiles/files/como-hackear-coin-master-2021_GM406889139.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_off00003005.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3005	22604 bytes
SHA-256: `2b15ec4ee30398f0ef7d8d6a42b4d04335eba2403deb2d815899c2edd5d446be`
`font_01_sfnt_off000062b8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62B8	18960 bytes
SHA-256: `dec3a2dcdb3f5e1e93e667d52eb884975711c1c7b108a73abffea5c36ba575f2`

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