PDF malware analysis — malicious · 0f20c1aac61fdcaf

MALICIOUS

PDF

44.4 KB Created: 2021-05-17 05:50:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9864f80d5b44af16c7cd53e42c352581 SHA-1: e67678fb252abda3d4b112f05a2802e50e262963 SHA-256: 0f20c1aac61fdcaff906b472bb63ea0157c3fa1bc63bdf6798f4f7274b0f25f0

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, identified as a link farm, likely intended to redirect users to malicious websites. The document body, though partially corrupted, suggests a lure related to "free username changes" and "game hacks," aligning with common phishing and malware distribution tactics. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to exploit user interest in online games.

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 https://netcdn.xyz/app/431946152/how-to-change-roblox-username-for-free-2021-game-hack
- http://goosesscuba.com/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdf
- http://goosesscuba.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdf
- http://goosesscuba.com/images/code-free-robux_GM431946152.pdf
- http://goosesscuba.com/images/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
- http://goosesscuba.com/images/coin-master-free-spins-cheat_GM406889139.pdf
- http://goosesscuba.com/images/coin-master-free-400-spin-link_GM406889139.pdf
- http://goosesscuba.com/images/master-free-spin_GM406889139.pdf
- http://goosesscuba.com/images/coin-master-hack-game-download-ios_GM406889139.pdf
- http://goosesscuba.com/images/roblox-robux_GM431946152.pdf
- http://goosesscuba.com/images/free-coin-master-hack-no-verification_GM406889139.pdf
- http://goosesscuba.com/images/how-to-get-minecraft-java-free_GM479516143.pdf
- http://goosesscuba.com/images/coin-master-hack-unlimited-spins-apk_GM406889139.pdf
- http://goosesscuba.com/images/how-to-get-free-coins-for-coin-master_GM406889139.pdf
- http://goosesscuba.com/images/free-robux-sites-that-work_GM431946152.pdf
- http://goosesscuba.com/images/free-robux-codes-2021-not-used_GM431946152.pdf
- http://goosesscuba.com/images/coin-master-free-spins-and-coins_GM406889139.pdf
- http://goosesscuba.com/images/free-robux-2021_GM431946152.pdf
- http://goosesscuba.com/images/minecraft-hacks-list_GM479516143.pdf
- http://goosesscuba.com/images/minecraft-windows-10-free-trial_GM479516143.pdf
- http://goosesscuba.com/images/coin-master-free-soins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a43.bin` `9bd8d0c36b5011886f09050f9cb1468a8f41ba3397f2fa0fec8f0a663128076d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A43	25900 bytes
`font_01_sfnt_off00008715.bin` `bf7704042115058311276e91f581871491bc3524547d766b0e7085d334bb6686`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8715	19644 bytes

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