PDF malware analysis — malicious · 7d5a241a89a12e13

MALICIOUS

PDF

34.3 KB Created: 2021-07-01 13:04:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: acd4b4c838b9ccb1f35ee164f46b9ad7 SHA-1: 238c33e79acfe34b00a8566d7594df79cc823912 SHA-256: 7d5a241a89a12e1364daa6deae1dfc0fad8aef1d6ae83bbafce0ccd4108c5b69

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, suggesting a phishing or scam attempt. The document body and extracted URLs explicitly mention 'free robux hack generator' and 'coin master free spins', indicating a lure for users seeking cheats or exploits. The presence of a PDF_SEO_LINK_FARM heuristic firing suggests the document is part of a larger network designed to drive traffic to malicious or scam-related sites.

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-roblox-robux-hack-generator-no-survey-game-hack PDF link annotation
- https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/install-free-game-coin-master_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/street-kings-roblox-hack_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-games-download-free_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/games-that-can-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/roblox-is-there-any-hacks-that-avast-antivirus-allows_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/roblox-adopt-me-free-money_GM431946152.pdfIn PDF document text
- https://beershebaschool.edu.np/ckfinder/userfiles/files/free-robux-obby-actually-works_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_off00002fe4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FE4	21872 bytes
SHA-256: `3069404788c46addcc792a1229a7f676a2ca822a56f346e91d58c5beb38ad551`
`font_01_sfnt_off00006038.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6038	19356 bytes
SHA-256: `cd0948ebb3a9338d3b2eca7e575309b209cc55392844897cf0203d295f1469c3`

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