PDF malware analysis — malicious · 19ee036338eefd60

MALICIOUS

PDF

43.0 KB Created: 2021-05-14 19:13:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 0d8698d9104e7930a64a86341c59f5eb SHA-1: d5fcc862031f613bff9204833d0c423e3863b2b4 SHA-256: 19ee036338eefd6063ed868a9e96f3ae9eced8cd6f1cf9f915112380b966d501

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, suggesting a phishing or malware distribution attempt. The document body and extracted URLs point towards lures for game cheats and hacks, such as 'Coin Master' and 'Roblox'. The ML classifier strongly flagged this PDF as malicious, and the presence of a large number of external links indicates a potential SEO poisoning or link farm attack designed to redirect users to malicious content.

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/coin-master-daily-spin-free-game-hack
- http://bpbfloydinc.org/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdf
- http://bpbfloydinc.org/images/get-free-food-in-coin-master_GM406889139.pdf
- http://bpbfloydinc.org/images/roblox-fun-com-free-robux_GM431946152.pdf
- http://bpbfloydinc.org/images/abd-roblox_GM431946152.pdf
- http://bpbfloydinc.org/images/free-robux-no-download_GM431946152.pdf
- http://bpbfloydinc.org/images/roblox-royale-high-diamond-hack_GM431946152.pdf
- http://bpbfloydinc.org/images/hacks-for-roblox-prison-life_GM431946152.pdf
- http://bpbfloydinc.org/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
- http://bpbfloydinc.org/images/coin-master-free-spin-and-coin_GM406889139.pdf
- http://bpbfloydinc.org/images/coin-master-free-pet-snacks_GM406889139.pdf
- http://bpbfloydinc.org/images/martian-lettuce-coin-master-free_GM406889139.pdf
- http://bpbfloydinc.org/images/100-free-spins-coin-master_GM406889139.pdf
- http://bpbfloydinc.org/images/free-robux-no-verification-2021_GM431946152.pdf
- http://bpbfloydinc.org/images/free-robux-com_GM431946152.pdf
- http://bpbfloydinc.org/images/free-robux-groups-2021_GM431946152.pdf
- http://bpbfloydinc.org/images/free-spin-links-coin-master-2021_GM406889139.pdf
- http://bpbfloydinc.org/images/free-spins-and-coins-coin-master_GM406889139.pdf
- http://bpbfloydinc.org/images/coin-master-hack-program_GM406889139.pdf
- http://bpbfloydinc.org/images/coin-master-game-hacks_GM406889139.pdf
- http://bpbfloydinc.org/images/best-free-spin-app-for-coin-master_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_off00004972.bin` `568bce22cd11872524b1276d89ede0b90aa26d8be1e597f4dad246bf27ea9a10`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4972	25972 bytes
`font_01_sfnt_off000085da.bin` `213ea0fed5678e19eff32fcc5d46e69a4f1b73f67043b57a178cf12547108d4a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85DA	18308 bytes

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