PDF malware analysis — malicious · 939c1c5e3e905bdc

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 23:32:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 3b241a6420765128c44d2ca0e58dda21 SHA-1: be0a67edb001d8347935793cb925a2f7850c978e SHA-256: 939c1c5e3e905bdc515b8dd1e6a633c3b040bd26af6d29c7b23b21b03e5099ee

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are designed to appear as free downloads or cheats for popular games like Minecraft and Roblox. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier flagged the PDF as malicious. The presence of a call-to-action phrase further supports the lure. The primary IOC is the external URL used for the apparent download or content delivery.

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/479516143/clients-minecraft-game-hack
- http://henrikedmark.com/images/coin-master-free-spins-only_GM406889139.pdf
- http://henrikedmark.com/images/win-free-robux_GM431946152.pdf
- http://henrikedmark.com/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdf
- http://henrikedmark.com/images/how-to-get-roblox-premium-for-free_GM431946152.pdf
- http://henrikedmark.com/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
- http://henrikedmark.com/images/roblox-zone-free-robux_GM431946152.pdf
- http://henrikedmark.com/images/how-to-hack-coin-master_GM406889139.pdf
- http://henrikedmark.com/images/minecraft-mobile-free_GM479516143.pdf
- http://henrikedmark.com/images/coin-master-free-spins-blogspot_GM406889139.pdf
- http://henrikedmark.com/images/free-minecraft-website_GM479516143.pdf
- http://henrikedmark.com/images/minecraft-that-you-can-play-for-free_GM479516143.pdf
- http://henrikedmark.com/images/how-to-get-a-lot-of-robux_GM431946152.pdf
- http://henrikedmark.com/images/june-29-coin-master-hack-no-human-verification_GM406889139.pdf
- http://henrikedmark.com/images/daily-free-spins-coin-master-2021_GM406889139.pdf
- http://henrikedmark.com/images/www-robux_GM431946152.pdf
- http://henrikedmark.com/images/free-roblox-injector_GM431946152.pdf
- http://henrikedmark.com/images/how-to-get-free-roblox-items_GM431946152.pdf
- http://henrikedmark.com/images/how-to-get-free-robux-on-mobile_GM431946152.pdf
- http://henrikedmark.com/images/free-spins-coin-master-2021-hack_GM406889139.pdf
- http://henrikedmark.com/images/how-to-get-minecraft-bedrock-for-free_GM479516143.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_off00004a30.bin` `ec7d6d5099191653794364457bca5e0a376df9e27ae696c685c66b49c21a6385`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A30	25216 bytes
`font_01_sfnt_off0000831f.bin` `b1e6b7721ac76cdb58ab715170998ed65443e780ca06fc40eb483816b5c8893a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x831F	17644 bytes

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