PDF malware analysis — malicious · 44ba7e2523423139

MALICIOUS

PDF

43.1 KB Created: 2021-05-13 21:03:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 10b977f3aa9801f402b057f085c99edb SHA-1: 4e8001596db085d982619e2f2630667befafcac8 SHA-256: 44ba7e2523423139900eaee8db72d5255167a770bfa82a8db1abc359c9ee2e7a

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links to external websites, many of which appear to be part of a link farm designed to boost SEO for gaming-related topics. The ML classifier strongly indicated maliciousness, and the presence of a download button lure suggests a deceptive workflow. The primary attack pattern involves directing users to potentially malicious or spammy content via these links.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/free-coin-master-spins-2021-game-hack
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/minecraft-java-edition-for-free_GM479516143.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/minecraft-bedrock-edition-pc-download-free_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/robux-hacks-2021_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/roblox-hack-site_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spins-and-free-coins_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-spin-codes_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/unlimited-coin-master-free-spins_GM406889139.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-someones-minecraft-account_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/lazyblox-com-free-robux_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/minecraft-free-ios-no-verification_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-free-account_GM406889139.pdf
- https://www.thecongostore.com/uploaded_files/userfiles/files/coin-master-hack-app-download-free_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004ceb.bin` `88c6890acf12a9379021be3c878be47969ea4a3d7f7e044ae9fee219a99ca8bf`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CEB	24824 bytes
`font_01_sfnt_off00008628.bin` `cbf21fc5c11f74798808ab0cc71af5e4bf323ced5a050f8983f0748b8c809d88`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8628	18288 bytes

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