PDF malware analysis — malicious · fc72e700f0547ffb

MALICIOUS

PDF

42.7 KB Created: 2021-05-31 05:22:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 02604de0c258958586b2153942ea3b7d SHA-1: c9e11f170b8b5368e7effcc030f45e24d684cdae SHA-256: fc72e700f0547ffb132edab42de0c929080c58368009ced5046814cabab71df6

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically mentioning 'free Robux'. The primary URL, https://netcdn.xyz/app/431946152/free-robux-codes-no-verification-game-hack, is embedded and likely leads to a malicious site or download. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering tactic to trick users into visiting a potentially harmful resource.

Machine Learning

Nyx PDF Classifier malicious score 0.9450

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/free-robux-codes-no-verification-game-hack PDF link annotation
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-minecraft-mods_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-robux-no-scam_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-coin-master-links_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-robux-accounts_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.otecschools.edu.gh/wp-content/uploads/fsqm-files/can-u-get-free-robux_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
`stream_003_off00004b0f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B0F	24156 bytes
SHA-256: `33d8391267e7db11317167b42159463e839e93c55784ba8e72f19781909ca6d5`
`font_01_sfnt_off00008233.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8233	18776 bytes
SHA-256: `1501cc25bcf8c3b3bf9df14f68216c1cc39cc5b0131e4343b63bafa21afb9c06`

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