PDF malware analysis — malicious · 31dd87eed70db379

MALICIOUS

PDF

32.0 KB Created: 2021-06-03 05:58:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: c48b2d2df5a62d7b5fb1f495fd2936db SHA-1: d663276fabbaecd2e989af3e7198895a9295e7de SHA-256: 31dd87eed70db37997bbcb01ae27dab03626804f68898bb54952694a11e63cde

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many of which are SEO-optimized and point to pages promising free Robux or game hacking information. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links designed to drive traffic. The document body, though partially corrupted, contains references to hacking and game-related terms, reinforcing the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 3

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.
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.online/app/431946152/how-do-u-hack-roblox-game-hack
- https://berkahjayamulia.com/ckfinder/userfiles/files/comment-etre-un-hacker-sur-roblox-francais_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/how-to-get-free-robux-app_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/free-daily-spins-coin-master-2021_GM406889139.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/roblox-robux-generator-tool_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/pokemon-go-free-id_GM1094591345.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/free-spin-and-daily-news-coin-master_GM406889139.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/how-you-get-free-robux_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/what-is-a-minecraft-client_GM479516143.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/coin-master-online-hack-no-survey-no-password_GM406889139.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/hack-tiktok-fans-free_GM835599320.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/oprewards-free-robux_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/how-do-u-get-free-robux-2021_GM431946152.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/coin-master-free-spins_GM406889139.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdf
- https://berkahjayamulia.com/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005352.bin` `4d1b7b7daccbec634a0f660b0972225cc1e5a795a2979bc8a9d9979e3230ee74`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5352	18376 bytes

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