PDF malware analysis — malicious · 5a51c33dd92cb34e

MALICIOUS

PDF

35.8 KB Created: 2021-06-19 15:37:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 37047660d4befb0714a0c56d60aff8d2 SHA-1: 9f6fc173b5a61fd74b69553d3814077f6c8238f9 SHA-256: 5a51c33dd92cb34e16338b008324376e66604b372a98998327b2c079322f1eb3

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are presented as 'free hacks' or 'free currency' for popular games. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting a link farm or SEO abuse tactic. The presence of an embedded URL pointing to 'netcdn.co' further supports the malicious intent of directing users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or malware distribution attempt.

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/easy-free-robux-hack-game-hack
- https://www.thecongostore.com/uploaded_files/userfiles/files/with-pokemon-go-free-download_GM1094591345.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spin-link-new_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-32-mod-hack-apk-download_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/no-scam-free-robux_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/20-free-spins-coin-master_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/mc-hacks_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-sites-that-work_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-today-dot-com_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-card-collection-link_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/crystal-sheep-free-robux_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-hack-tool-pc-download_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/minecraft-font-free_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/roblox-hack-com_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000034cb.bin` `fd263acdb2edd1b8abe4ecbcc2454b259fd912c8aa0aaffc09a2b08036500d59`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x34CB	22572 bytes
`font_01_sfnt_off0000671f.bin` `d4228c2e6a32e965004fc97be0baff5e3fbc12f2dc0ecdff167715157d9aa2df`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x671F	19068 bytes

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