PDF malware analysis — malicious · 7f460a156ab2d6c1

MALICIOUS

PDF

44.9 KB Created: 2021-05-12 09:31:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: d897b97b495e1c0cdc028db1df11ad2e SHA-1: 7c90a4bd8e4580e712a21a773b2514116f671d24 SHA-256: 7f460a156ab2d6c1eaf507631c5d64c52bb04032b94e23562fa46215f85053f2

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, identified as a link farm, that direct users to pages offering 'free coins' or 'free spins' for games like Coin Master. The document body and heuristics indicate a lure to click these links, which likely leads to phishing sites or further malware. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/free-coins-coin-master-game-hack
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-earn-free-spins-coin-master_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/grab-points-login_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-minecraft-alts_GM479516143.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-spin-coin-master-twitter_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-generator-no-verification_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spins-apple_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-coins-coin-master-link-2021_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-minecraft-windows-10-account_GM479516143.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-do-you-get-free-food-on-coin-master_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-robux-on-android_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-ios_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-app-2021_GM431946152.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-no-verification_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdf
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004a44.bin` `3588079575f3012d61b41b8b05ec8d64af01265606d27ce940ecf1e27c75a998`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A44	25500 bytes
`font_01_sfnt_off000083ac.bin` `9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83AC	3124 bytes
`font_02_sfnt_off00008e8a.bin` `fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E8A	17712 bytes

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