PDF malware analysis — malicious · c676c33648999c11

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 11:08:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: fa072d252080432b23b425b7d4a5ee42 SHA-1: 74c65d5ac5b66fde80035170e6889a075ac0a9b9 SHA-256: c676c33648999c11a2f9112282421e6d11cdcd706db729d32e57d2674361c6e8

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 structured as SEO-optimized links pointing to game-related hacks and currency. The primary URL http://netcdn.co/app/431946152/free-4-now-info-roblox-game-hack likely serves as a landing page for downloading malicious content. The ML classifier strongly indicated maliciousness, supporting the conclusion that this document is part of a phishing or malware distribution scheme.

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-4-now-info-roblox-game-hack
- https://www.iosas.info/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-daily-free-spins_GM406889139.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-hack-without-verification-2021_GM406889139.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/free-roblox-blue-hats_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-can-i-get-free-robux_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/roblox-executor-free-download_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/minecraft-free-version-pc_GM479516143.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/free-robux-kid-friendly_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/free-group-roblox_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-can-u-get-free-robux_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-robux-codes-for-free_GM431946152.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/tiktok-followers-for-free_GM835599320.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/how-to-get-free-cards-for-coin-master_GM406889139.pdf
- https://www.iosas.info/uploaded_files/userfiles/files/coin-master-app-free-download_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002ff6.bin` `76a184310b880c5b1aa6d6c40ad4ac33177f0f5fe5d1729d956aaf94a4a6987f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF6	22976 bytes
`font_01_sfnt_off00006373.bin` `47e80d297489936e28df3de066defb344a641336e0c9afb9ecb0d2e7c9f10b86`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6373	18876 bytes

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