PDF malware analysis — malicious · 162602d61fb8937b

MALICIOUS

PDF

33.6 KB Created: 2021-06-22 16:05:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 7e4f9b68f192ab6fb2a6e23af757e782 SHA-1: c908ff4aa6d4ca518db775706b19f99df3dd04ea SHA-256: 162602d61fb8937bd1384836babf36a201626e0bf70b7db2275fcb07e8d85421

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains embedded JavaScript and links to a known malicious redirector, suggesting it's part of a phishing or malware distribution campaign. The document body and numerous linked PDFs promote game cheats and virtual currency, indicating a lure for users seeking such items. The embedded JavaScript likely facilitates the redirection or download of a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

Heuristics 5

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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
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_noodle-roblox-game-hack In PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-create-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/free-roblox-account-generator_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-free-obc-card-codes_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-robux-hack-2021-no-survey-no-password_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-tycoon-hack-scripts_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/best-free-stuff-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/roblox-counter-blox-roblox-offensive-hacks-esp_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/coin-master-hack-apk-app_GM406889139.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/redeem-roblox-cards-free-codes-2021_GM431946152.pdfIn PDF document text
- http://www.erealitysolutions.com/assets/dealercmslogin/js/ckfinder/userfiles/files/get-roblox-items-for-free_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_off00002e20.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E20	21992 bytes
SHA-256: `605509685fde5b7bf98edd9da810a90ebe66d3640319fd043fc9685789ada12e`
`font_01_sfnt_off00005f02.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F02	18856 bytes
SHA-256: `3acf14379312d62fbe4bd385927e8852fea3ccfcb5c0fa392ba8e268cc621853`

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