PDF malware analysis — malicious · 48d51b3c6b5b9dee

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 12:41:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 342c441311896c5050a2c6f2d92a2325 SHA-1: 2463116f1c5b952caebb13a9cdb4c5f678bade83 SHA-256: 48d51b3c6b5b9dee072f539242e9aa46946ec856288c597f1b9ac3e32c26873d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, many of which point to other PDF files hosted on external domains, suggesting a link farm or redirection scheme. The primary URL and many others are related to game hacks and cheats, indicating a lure to download potentially malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/worst-client-game-hack
- https://www.prodex-holz.cz/images/free-games-like-roblox_GM431946152.pdf
- https://www.prodex-holz.cz/images/coin-master-hack-using-cheat-engine_GM406889139.pdf
- https://www.prodex-holz.cz/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdf
- https://www.prodex-holz.cz/images/free-coins-coin-master-today_GM406889139.pdf
- https://www.prodex-holz.cz/images/prison-life-roblox-hacks_GM431946152.pdf
- https://www.prodex-holz.cz/images/roblox-com-free-robux_GM431946152.pdf
- https://www.prodex-holz.cz/images/how-do-i-get-free-robux_GM431946152.pdf
- https://www.prodex-holz.cz/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
- https://www.prodex-holz.cz/images/coin-master-free-spin-ml_GM406889139.pdf
- https://www.prodex-holz.cz/images/coin-master-free-spins-link-blogspot_GM406889139.pdf
- https://www.prodex-holz.cz/images/how-can-you-get-robux_GM431946152.pdf
- https://www.prodex-holz.cz/images/blogspot-coin-master-free-spins_GM406889139.pdf
- https://www.prodex-holz.cz/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
- https://www.prodex-holz.cz/images/coin-master-twitter-free-spins_GM406889139.pdf
- https://www.prodex-holz.cz/images/free-spin-link-for-coin-master_GM406889139.pdf
- https://www.prodex-holz.cz/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
- https://www.prodex-holz.cz/images/coin-master-hack-without-verification-code_GM406889139.pdf
- https://www.prodex-holz.cz/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdf
- https://www.prodex-holz.cz/images/how-to-play-roblox-for-free_GM431946152.pdf
- https://www.prodex-holz.cz/images/coin-master-32-android-mod-hack-apk-download_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_off00004c34.bin` `8c782e6d3bda66694ade8d72d6d73eb7cd82cdb1e7f61327e35d8bd679f59edd`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C34	24724 bytes
`font_01_sfnt_off000083bb.bin` `c4c464576242dc15d115a20e89f4ad7b5703edf25fae76549fb4d98dda0b80b5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83BB	17752 bytes

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