PDF malware analysis — malicious · 3e3fa4951f0aa05c

MALICIOUS

PDF

45.6 KB Created: 2021-06-02 12:17:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 177566b7a4c9d652bec6da17524708e8 SHA-1: a4ab067b5895c146d4ccb4c2ace43cd32f836d3a SHA-256: 3e3fa4951f0aa05c5051d54c6f6eba9cfaf0ca2167ec152c6238c0463d439a0f

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are SEO-optimized and point to resources related to game hacks and free currency. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or initiate further downloads. The document body, though partially corrupted, contains URLs that reinforce this phishing and potential malware distribution theme.

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.xyz/app/431946152/idenity-fraud-hacks-roblox-game-hack
- http://www.drent.se/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
- http://www.drent.se/images/free-robux-generator_GM431946152.pdf
- http://www.drent.se/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
- http://www.drent.se/images/coin-master-free-spin-realme-products_GM406889139.pdf
- http://www.drent.se/images/free-modded-minecraft-server_GM479516143.pdf
- http://www.drent.se/images/coin-master-free-spins-link-2021-today_GM406889139.pdf
- http://www.drent.se/images/roblox-games-that-give-you-free-robux_GM431946152.pdf
- http://www.drent.se/images/how-do-you-get-free-robux_GM431946152.pdf
- http://www.drent.se/images/apps-for-free-robux_GM431946152.pdf
- http://www.drent.se/images/coin-master-hacks-no-human-verification_GM406889139.pdf
- http://www.drent.se/images/how-to-get-a-free-minecraft-server_GM479516143.pdf
- http://www.drent.se/images/coin-master-free-spins-2-5-2021_GM406889139.pdf
- http://www.drent.se/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
- http://www.drent.se/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdf
- http://www.drent.se/images/freer-tiktok_GM835599320.pdf
- http://www.drent.se/images/robux-free-2021_GM431946152.pdf
- http://www.drent.se/images/free-robux-safe_GM431946152.pdf
- http://www.drent.se/images/ways-to-get-free-robux_GM431946152.pdf
- http://www.drent.se/images/minecraft-hacked-client-18_GM479516143.pdf
- http://www.drent.se/images/how-do-i-get-free-spins-on-coin-master_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_004_off000051d8.bin` `ccadfac5d6af47f0d5d49fdcde1c5d42debe69ba62242bce7371325626b6a1b8`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51D8	25956 bytes
`font_01_sfnt_off00008d53.bin` `be4fb6adeec4c312c7436b12d1732a8c1e93807e33f5e64f7c892d811a6c0fbf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D53	19064 bytes

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