PDF malware analysis — malicious · a3ff9ffdd058538a

MALICIOUS

PDF

42.9 KB Created: 2021-05-19 17:20:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 2f19df74e320cc5eb720c96cf561f554 SHA-1: 6f23ee96334ab8f7e05b5b2dbc85f8964d2b0f0e SHA-256: a3ff9ffdd058538a618364b76a7147fa841ca26a20a4bcc2fe06e6f494e1cb97

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDF documents, suggesting a link farm designed to attract users searching for game-related cheats or free downloads. The presence of a direct download URL and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-java-for-free-game-hack
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/ways-to-earn-robux_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-hack-no-verification_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-coin-master-spin-generator_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-script-hack_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/games-that-give-free-robux_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-pc-game-free-download_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-giveaway-live_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-human-verification_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-hack-site_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-link-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-master_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spins-coin-master-november-2021_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/minecraft-free-download-windows_GM479516143.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/bit-ly-coin-master-hack_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spin-coin-master-link-download_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_003_off00004c01.bin` `80e3c003b819aea23e37ce4e7a33df89a2469384753b70eba0c34a3529b8218a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C01	25232 bytes
`font_01_sfnt_off0000862d.bin` `877a408be013f078917fd76a4bbe40e25113e750108d1b6ebc83b07ab96d646a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x862D	17992 bytes

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