PDF malware analysis — malicious · 2acbe16bd71b4e96

MALICIOUS

PDF

47.8 KB Created: 2021-05-11 15:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: af9efc870e362bd111d7429f87194179 SHA-1: aae3c3e525eeee7744d3daad42f03ed7bc499848 SHA-256: 2acbe16bd71b4e960adbab68a4ee0862b1687cb2726d8c33cf3473efb42a9d50

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which appear to be part of an SEO link farm. The document body and extracted URLs suggest a lure related to 'hacking' or obtaining in-game currency for games like Roblox and Coin Master. The presence of a ML classifier firing with a high score and numerous external links indicates a malicious intent, likely to drive traffic to malicious sites or potentially distribute further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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/how-to-hack-roblox-to-get-robux-game-hack PDF link annotation
- https://senvoigiatot.com/public/upload/files/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/free-bling-bling-card-coin-master_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/getrobux-come_GM431946152.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/daily-coin-master-spins_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coinmaster-spins_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://senvoigiatot.com/public/upload/files/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a43.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A43	27700 bytes
SHA-256: `12bee00048b973ac0708164c956b8caf38ad34eb6e9745a23f2305f44047e6b6`
`font_01_sfnt_off00008a8a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A8A	3884 bytes
SHA-256: `40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf`
`font_02_sfnt_off00009732.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9732	18588 bytes
SHA-256: `6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b`

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