PDF malware analysis — malicious · bbd39893f6fe9f6a

MALICIOUS

PDF

48.3 KB Created: 2021-05-17 05:46:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2746292e8f08f98864cb659dec60617f SHA-1: 64715a8c3c8a80e7eb1b49354ba4b9b7ca1e4e91 SHA-256: bbd39893f6fe9f6aaf0ceb838588dddd91be8e47f08c8dec2f9c5fa01abdf267

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 are structured as SEO-friendly slugs pointing to game-related cheats and hacks. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, likely to a website that may host further malicious content or attempt social engineering. No scripts were extracted, but the PDF structure itself is designed to facilitate link farming.

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/406889139/cheat-codes-for-coin-master-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-survey_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-system_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-pc-download-free-full-version_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-android-2021_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_off00004f54.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4F54	25376 bytes
SHA-256: `ae1a8bd76e683c1a4ab5c82f78e1466b39df582295e141535dd99e065e5a9bdf`
`font_01_sfnt_off00008923.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8923	7332 bytes
SHA-256: `d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d`
`font_02_sfnt_off00009b3b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B3B	18052 bytes
SHA-256: `c83c2968f9adc9e8284b9f918c7c7a0f7d3bbc65ccd05c6284fac2f5c017bb12`

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