PDF malware analysis — malicious · b9d6d2528ccdafa4

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 16:51:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 8917ad072c6f8ecf4f88fd2de00c56b5 SHA-1: e0a8949b41a827dd2f95857530a0206db5788ad2 SHA-256: b9d6d2528ccdafa47edaf007d1a347e8739731de933c4f79317ce68bc4194872

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external websites, many of which are presented as downloads for game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports this. The document's content and structure suggest it is designed to trick users into downloading and executing potentially harmful files.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-hack-aimbot-download-game-hack PDF link annotation
- http://anisio.eti.br/ckfinder/userfiles/files/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/free-robuxfr_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/stinkywinkys-robux-hack_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/robux-hack-100-works_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/roblox-2021-robux-in-game-cheat_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/how-to-make-a-minecraft-server-for-free-java_GM479516143.pdfIn PDF document text
- http://anisio.eti.br/ckfinder/userfiles/files/roblox-bee-swarm-simulator-cheats-2021_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000316e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x316E	22368 bytes
SHA-256: `2c0d7feccd957afaeba7b9a8175e8bd036b4dd756f5c15c46a0a02f5316f3699`
`font_01_sfnt_off000062e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62E5	19648 bytes
SHA-256: `3f0833c3d6b94c55954fc0cdd02d805c2153d1ce070ec50377f5d21072c85cf0`

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