PDF malware analysis — malicious · 2458599fb386a1ac

MALICIOUS

PDF

42.4 KB Created: 2021-05-13 22:00:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d2da4eed093d205b7becb11678f8826a SHA-1: 55c1c172cf3da045426ee73c8e5fe8a79b325431 SHA-256: 2458599fb386a1ac3a2e1cfbff6e4eef6d86f260a60a205c42a7f00f47ed86ab

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, many of which are part of a link farm designed to appear as SEO-optimized content for game hacks and free currency. The primary URL, 'https://netcdn.xyz/app/431946152/op-rewards-free-robux-game-hack', and the extensive list of related links on 'ff-obertraun.at' strongly suggest a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/op-rewards-free-robux-game-hack
- http://ff-obertraun.at/images/coin-master-hack-ios-without-verification_GM406889139.pdf
- http://ff-obertraun.at/images/free-online-games-like-minecraft_GM479516143.pdf
- http://ff-obertraun.at/images/coin-master-tricks-and-hacks_GM406889139.pdf
- http://ff-obertraun.at/images/how-to-get-free-robux-fast_GM431946152.pdf
- http://ff-obertraun.at/images/coin-master-daily-free-spins-link-march-2021_GM406889139.pdf
- http://ff-obertraun.at/images/free-robux-earn_GM431946152.pdf
- http://ff-obertraun.at/images/free-robux-no-verification-no-download-2021_GM431946152.pdf
- http://ff-obertraun.at/images/how-to-find-coin-master-free-spin-link_GM406889139.pdf
- http://ff-obertraun.at/images/robux-codes_GM431946152.pdf
- http://ff-obertraun.at/images/free-robux-generator-com-roblox-hack_GM431946152.pdf
- http://ff-obertraun.at/images/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdf
- http://ff-obertraun.at/images/free-spins-coin-master-links_GM406889139.pdf
- http://ff-obertraun.at/images/minecraft-rtx-download-free_GM479516143.pdf
- http://ff-obertraun.at/images/how-to-get-free-coins-in-coin-master_GM406889139.pdf
- http://ff-obertraun.at/images/coin-master-free-link-spin_GM406889139.pdf
- http://ff-obertraun.at/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
- http://ff-obertraun.at/images/free-roblox-clothes-girl_GM431946152.pdf
- http://ff-obertraun.at/images/how-to-get-free-robux-no-scam_GM431946152.pdf
- http://ff-obertraun.at/images/hack-coins-in-coin-master_GM406889139.pdf
- http://ff-obertraun.at/images/coin-master-hack-ios-app_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_off000048da.bin` `cecac34b618cee5856a222e557b4a0e975c3d25c43fc283d7e17568a61752478`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48DA	24700 bytes
`font_01_sfnt_off000081d6.bin` `060429e30aee9ae32e68a5a96a6a224aa27ea33c727993be362f9dfde6d66d3f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81D6	18756 bytes

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