PDF malware analysis — malicious · 7f116db67024becc

MALICIOUS

PDF

45.2 KB Created: 2021-05-15 00:00:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9f1bfb8081560b634204e578833a4876 SHA-1: d265a1f217f55d46d9eec7609a674e572eda853d SHA-256: 7f116db67024beccd2ddba5faf26bef21cef5c0462cc3c9661c2e264ee2d58d3

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to resources related to game cheats and hacks. The ML classifier also flagged this PDF as malicious. The presence of a call-to-action phrase suggests a user-interaction lure, likely intended to drive traffic to malicious or scam-related websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9621

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-spins-for-coin-master-app-game-hack
- http://bit-sky.com/images/minecraft-cheats-switch_GM479516143.pdf
- http://bit-sky.com/images/google-coin-master-free-spins_GM406889139.pdf
- http://bit-sky.com/images/lastrick-com-coin-master-hack_GM406889139.pdf
- http://bit-sky.com/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
- http://bit-sky.com/images/coin-master-free-spin-daily-link_GM406889139.pdf
- http://bit-sky.com/images/is-roblox-free-on-xbox_GM431946152.pdf
- http://bit-sky.com/images/robux-match_GM431946152.pdf
- http://bit-sky.com/images/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdf
- http://bit-sky.com/images/free-robux-groups-2021_GM431946152.pdf
- http://bit-sky.com/images/minecraft-free-download-no-virus_GM479516143.pdf
- http://bit-sky.com/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
- http://bit-sky.com/images/haktuts-coin-master-free-spins_GM406889139.pdf
- http://bit-sky.com/images/free-spins-on-coin-master-link_GM406889139.pdf
- http://bit-sky.com/images/free-minecraft-domain_GM479516143.pdf
- http://bit-sky.com/images/coin-master-hack-blog_GM406889139.pdf
- http://bit-sky.com/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdf
- http://bit-sky.com/images/oprewards-login_GM431946152.pdf
- http://bit-sky.com/images/free-robux-generator-no-verification_GM431946152.pdf
- http://bit-sky.com/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdf
- http://bit-sky.com/images/coin-master-free-spins-coins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000048c1.bin` `ba5287437105e1d828aea9c41bdf7b78549fc5e19a52f94d2f0a8c413e2725da`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48C1	24812 bytes
`font_01_sfnt_off000081d0.bin` `dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81D0	4020 bytes
`font_02_sfnt_off00008f57.bin` `c0e07e045f0496ba68af439e810d5bb13e23b0d850ef9426c095223eaa712aa7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F57	17884 bytes

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