PDF malware analysis — malicious · 33c23ad7d581a4af

MALICIOUS

PDF

34.1 KB Created: 2021-07-01 06:42:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: d519d3ef0de641e4318950cf35e78e59 SHA-1: 8a22d5ad86db6455f5ecd03c775ef68e8ccff410 SHA-256: 33c23ad7d581a4af08406301f45a5cd6b4b33cd4e5ab740f74f729b14367945b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-games-on-roblox-game-hack PDF link annotation
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-hack-in-survival-303-roblox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/new-free-stuff-on-roblox-august-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-change-your-roblox-name-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/climrbx-free-robux_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/roblox-free-robux-club_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-do-hacks-with-admin-roblox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-hack-any-roblox-account-june-2021_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/roblox-hack-download_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-do-i-become-a-hacker-on-roblox_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/roblox-its-free_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/minecraft-for-free-games_GM479516143.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/free-roblox-games-by-admin_GM431946152.pdfIn PDF document text
- https://www.jjautomation.in/uploaded_files/userfiles/files/pokemon-go-free-yveltal_GM1094591345.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_off00002e23.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E23	22400 bytes
SHA-256: `4f503f986ff6d7fe755163323bee5e0006478c333a3498afcc44a92ba38c8548`
`font_01_sfnt_off00006036.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6036	19052 bytes
SHA-256: `56f4e65812c403ac511da7c683eb66c8172328fd08918d47063ad90a487708b4`

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