PDF malware analysis — malicious · bf912a62ea974aa4

MALICIOUS

PDF

56.6 KB Created: 2021-05-16 03:04:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3b49e90c0b5ebbb1f1dedb7cb5654cb3 SHA-1: ad934e1a871e62c8014b623ca8657d72efb492a9 SHA-256: bf912a62ea974aa4225461d06a8739a75bdfd4ad87ad1f0827927f9f35200181

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, identified as a link farm, pointing to various game-related cheat and hack websites. The ML classifier also flagged this PDF as malicious. The presence of these links suggests an attempt to redirect users to potentially harmful sites for further exploitation or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.8198

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/406889139/coin-master-promo-code-2021-game-hack
- http://umksn.pl/images/how-to-get-free-roblox-gift-cards_GM431946152.pdf
- http://umksn.pl/images/coin-master-heaven-free-spins-link_GM406889139.pdf
- http://umksn.pl/images/coin-master-free-card-link-today_GM406889139.pdf
- http://umksn.pl/images/free-robux-without-human-verification-real_GM431946152.pdf
- http://umksn.pl/images/free-roblox-shirts-templates_GM431946152.pdf
- http://umksn.pl/images/coin-master-free-spin-and-coins-links_GM406889139.pdf
- http://umksn.pl/images/codes-how-to-get-free-robux_GM431946152.pdf
- http://umksn.pl/images/coin-master-hack-version-download-2021_GM406889139.pdf
- http://umksn.pl/images/can-you-get-minecraft-windows-10-for-free_GM479516143.pdf
- http://umksn.pl/images/coin-master-mod-apk-free-download_GM406889139.pdf
- http://umksn.pl/images/ww-robux_GM431946152.pdf
- http://umksn.pl/images/minecraft-ps4-free_GM479516143.pdf
- http://umksn.pl/images/robux-free-com_GM431946152.pdf
- http://umksn.pl/images/roblox-com-free_GM431946152.pdf
- http://umksn.pl/images/free-robux-no-email_GM431946152.pdf
- http://umksn.pl/images/coin-master-free-spin-whatsapp-group-link_GM406889139.pdf
- http://umksn.pl/images/how-to-get-free-robux-hack_GM431946152.pdf
- http://umksn.pl/images/coin-master-raid-hack_GM406889139.pdf
- http://umksn.pl/images/coin-master-link-for-spins_GM406889139.pdf
- http://umksn.pl/images/free-robux-without-human-verification-2021_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049b3.bin` `1263546fcfb47a77c891dfe4772cdc5d00b020a872ae7d7b66adab6e581b5e54`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49B3	29008 bytes
`font_01_sfnt_off00008d7a.bin` `ed7bb336d7ef8856c1d3f3e7588020df8a97f1516275a927db66f54f12ba2e00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D7A	3124 bytes
`font_02_sfnt_off0000986a.bin` `cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x986A	7960 bytes
`font_03_sfnt_off0000ab8f.bin` `78ba75ad106ca8b847d5b6b00c40510cee8ee17e324b6b043c23b4765ae22915`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAB8F	18536 bytes
`font_04_sfnt_off0000ce79.bin` `fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCE79	4272 bytes

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