PDF malware analysis — malicious · 305212ffb2ca6743

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 01:35:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 580167c7fb692745ca92cb11e87c3540 SHA-1: f63619d53f3133ffb1e4772baf08bacd2479e558 SHA-256: 305212ffb2ca674324ef878c0cd5d927951d26b92c68fdfb73e3d735d5c0fb86

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering free in-game currency or items for popular games like Coin Master and Roblox. The ML classifier strongly indicated maliciousness, and the presence of numerous links suggests a link farm designed to redirect users to potentially malicious websites. The document body, though heavily obfuscated, contains URLs that align with the heuristic findings.

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-free-spins-link-today-new-game-hack
- http://drentklubben.se/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
- http://drentklubben.se/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
- http://drentklubben.se/images/coin-master-fb-free-spins-link_GM406889139.pdf
- http://drentklubben.se/images/minecraft-world-free-download_GM479516143.pdf
- http://drentklubben.se/images/coin-master-apk-free-download_GM406889139.pdf
- http://drentklubben.se/images/coin-master-hacks-iphone_GM406889139.pdf
- http://drentklubben.se/images/free-coin-link-coin-master_GM406889139.pdf
- http://drentklubben.se/images/free-spins-for-coin-master_GM406889139.pdf
- http://drentklubben.se/images/coin-master-20-free-spins-link-2021_GM406889139.pdf
- http://drentklubben.se/images/coin-master-game-download-free_GM406889139.pdf
- http://drentklubben.se/images/free-robux-without-offers_GM431946152.pdf
- http://drentklubben.se/images/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdf
- http://drentklubben.se/images/free-spins-coin-master-2021-app_GM406889139.pdf
- http://drentklubben.se/images/coin-master-free-spins-for-today_GM406889139.pdf
- http://drentklubben.se/images/how-to-get-free-robux-on-pc_GM431946152.pdf
- http://drentklubben.se/images/good-free-minecraft-server-hosting_GM479516143.pdf
- http://drentklubben.se/images/free-coin-master-coins-and-spins_GM406889139.pdf
- http://drentklubben.se/images/coin-master-hack-spin-ios_GM406889139.pdf
- http://drentklubben.se/images/roblox-free-robux-no-human-verification_GM431946152.pdf
- http://drentklubben.se/images/free-spins-coin-master-hack-2021_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_off00004998.bin` `7b0de04b43695fb4c939f3d9f2a849e49d3ff85c0fa3badd25995e759a6c4ec2`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4998	26000 bytes
`font_01_sfnt_off000083dc.bin` `51c95658009ee6a6ae875a8d4133a79c51d36fbd34bac1203a2f2fe060da7c96`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83DC	18572 bytes

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