PDF malware analysis — malicious · b9afa599163f024f

MALICIOUS

PDF

45.9 KB Created: 2021-06-07 13:48:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d429a6ae8fc57a6bbf8b42b9aa75a6dd SHA-1: 0c8ba7478c197305faa6ff8419cbd9667fd12a22 SHA-256: b9afa599163f024f03c57a5346a937bac94733f315d9525db95d0cb41fd762d8

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links and a link farm heuristic firing, suggesting a malicious intent to redirect users to external sites. The document body and extracted URLs point towards lures for game cheats and hacks, a common tactic for distributing malware or conducting phishing. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/best-free-to-play-tower-defense-games-on-roblox-game-hack
- http://korporacjaroma.pl/images/coin-master-hack-apk-online_GM406889139.pdf
- http://korporacjaroma.pl/images/minecraft-java-free-download_GM479516143.pdf
- http://korporacjaroma.pl/images/roblox-free-robux-no-human-verification_GM431946152.pdf
- http://korporacjaroma.pl/images/free-coins--spins-coin-master_GM406889139.pdf
- http://korporacjaroma.pl/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
- http://korporacjaroma.pl/images/how-to-glitch-free-robux_GM431946152.pdf
- http://korporacjaroma.pl/images/free-roblox-hair-to-wear_GM431946152.pdf
- http://korporacjaroma.pl/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
- http://korporacjaroma.pl/images/games-that-give-free-robux_GM431946152.pdf
- http://korporacjaroma.pl/images/free-mojang-account-with-minecraft_GM479516143.pdf
- http://korporacjaroma.pl/images/coin-master-daily-free-spins-link_GM406889139.pdf
- http://korporacjaroma.pl/images/websites-to-get-free-robux_GM431946152.pdf
- http://korporacjaroma.pl/images/how-to-get-800-robux-for-free_GM431946152.pdf
- http://korporacjaroma.pl/images/minecraft-hack-2021_GM479516143.pdf
- http://korporacjaroma.pl/images/wahoo-gaming-co-free-robux_GM431946152.pdf
- http://korporacjaroma.pl/images/hacks-for-roblox-jailbreak_GM431946152.pdf
- http://korporacjaroma.pl/images/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
- http://korporacjaroma.pl/images/robux-com-free_GM431946152.pdf
- http://korporacjaroma.pl/images/tiktok-hearts-free-2021_GM835599320.pdf
- http://korporacjaroma.pl/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off000053d1.bin` `3c89eb8896384b2b0502506fa0895e9f15fb0b9d16878cca4a5d0f0f820a3ff0`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x53D1	25252 bytes
`font_01_sfnt_off00008e39.bin` `4afde761e8cf1fa8ea17f3bd16c8427f0825d759b9dfaa7759a59a14c51c9614`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E39	19208 bytes

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