PDF malware analysis — malicious · 0dfdb5ea963d8a49

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 07:13:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 740f93e82dbbdae08368ae74250e9bb5 SHA-1: af2013a3ba3903f407540f2f44eb47bd1b067f74 SHA-256: 0dfdb5ea963d8a4975ca0054bde1a3fa133123e5a2c021851314fceb48e8ed47

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external websites. One prominent URL, 'https://netcdn.online/app/406889139/coin-master-free-cards-2021-game-hack', suggests a lure related to game cheats or hacks. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to similar lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-free-cards-2021-game-hack
- https://bartonprivate.com.au/sites/default/files/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
- https://bartonprivate.com.au/sites/default/files/files/how-to-change-username-on-roblox-for-free_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/robux-com-free-robux_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/roblox-land-free-robux_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdf
- https://bartonprivate.com.au/sites/default/files/files/free-spins-coin-master-2021_GM406889139.pdf
- https://bartonprivate.com.au/sites/default/files/files/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdf
- https://bartonprivate.com.au/sites/default/files/files/is-minecraft-free-on-computer_GM479516143.pdf
- https://bartonprivate.com.au/sites/default/files/files/coin-master-free-blogspot_GM406889139.pdf
- https://bartonprivate.com.au/sites/default/files/files/free-robux-app_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/link-for-free-spins-on-coin-master_GM406889139.pdf
- https://bartonprivate.com.au/sites/default/files/files/how-do-i-get-robux-on-roblox_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/free-robux-hack_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/free-promo-codes-for-robux_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/script-for-pubg-uc-hack_GM1330123889.pdf
- https://bartonprivate.com.au/sites/default/files/files/free-coins-coin-master-haktuts_GM406889139.pdf
- https://bartonprivate.com.au/sites/default/files/files/robux-generator-without-human-verification_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/roblox-fun-com-free-robux_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/free-robux-script_GM431946152.pdf
- https://bartonprivate.com.au/sites/default/files/files/how-to-get-free-robux-without-paying_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_off0000543f.bin` `605e77e1631ccc7457f0adaafee710a720aa548f1ce298271b725fe21e7a125e`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x543F	24532 bytes
`font_01_sfnt_off00008c61.bin` `1103c1a9052967993c67e1ec6a20b7963a45820bc749ae4085be8aaf66ba1d93`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C61	18288 bytes

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