PDF malware analysis — malicious · df56094cf94e5ab2

MALICIOUS

PDF

44.8 KB Created: 2021-05-15 17:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 88384784f7b258d8dbb1412df012a548 SHA-1: 35d8bcbe28403f9d6e91d1b9a5987a381f5c0f61 SHA-256: df56094cf94e5ab253c31b0dec101d138c6e954fb37b0e13c0075974b1c642b8

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, identified as a link farm, suggesting a tactic to drive traffic to potentially malicious or ad-filled websites. The ML classifier also flagged this PDF as malicious with high confidence. The document body and embedded links relate to 'Roblox' and 'Coin Master' promotions, likely a lure to encourage clicks.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/431946152/roblox-promo-codes-for-free-robux-game-hack
- http://ivanflores.cl/images/apps-that-give-you-free-robux_GM431946152.pdf
- http://ivanflores.cl/images/coin-master-claim-free-spins_GM406889139.pdf
- http://ivanflores.cl/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdf
- http://ivanflores.cl/images/coin-master-coins-free_GM406889139.pdf
- http://ivanflores.cl/images/roblox-robux-hack_GM431946152.pdf
- http://ivanflores.cl/images/roblox-free-robux-generator_GM431946152.pdf
- http://ivanflores.cl/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdf
- http://ivanflores.cl/images/free-links-for-coin-master_GM406889139.pdf
- http://ivanflores.cl/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
- http://ivanflores.cl/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
- http://ivanflores.cl/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
- http://ivanflores.cl/images/free-daily-spins-from-coin-master_GM406889139.pdf
- http://ivanflores.cl/images/how-to-get-free-robux-games_GM431946152.pdf
- http://ivanflores.cl/images/mcpe-com_GM479516143.pdf
- http://ivanflores.cl/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdf
- http://ivanflores.cl/images/coin-master-free-spins-moonactive_GM406889139.pdf
- http://ivanflores.cl/images/free-coin-master-spins-blog_GM406889139.pdf
- http://ivanflores.cl/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdf
- http://ivanflores.cl/images/coin-master-free-spins-link-today-instagram_GM406889139.pdf
- http://ivanflores.cl/images/how-to-get-free-robux-easy_GM431946152.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_off00004d93.bin` `9ab7be840786280f13fcac11bad7d7cc32de2b408006e334603bbdfdc29ac53a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D93	26456 bytes
`font_01_sfnt_off00008be6.bin` `3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BE6	18676 bytes

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