PDF malware analysis — malicious · 705d2390caddeb0d

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 21:00:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: ccf53a5525592256b355f2a4de43cee1 SHA-1: c951e57cb323e3a4126e529f5bb4be622c877e0d SHA-256: 705d2390caddeb0d1f5c7a57932a3f0ee9fd9141a10fa71886c07c3b82e99c10

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many of which point to domains associated with SEO link farms and potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download button' lure further supports the malicious intent. Although no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to external sites, likely for malware distribution or phishing.

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-unlimited-spin-link-game-hack
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/how-do-you-get-free-roblox_GM431946152.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-homepage_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-coins-and-spins-link-for-coin-master_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-spin-coin-master-iphone_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-hack-quora_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/minecraft-online-free-no-download_GM479516143.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/minecraft-bedrock-free_GM479516143.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/how-to-download-wurst_GM479516143.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-hacks-for-gold-cards_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/roblox-rewards-site_GM431946152.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-extra-spins_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-robux-images_GM431946152.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/coin-master-hack-no-human-verification-2021_GM406889139.pdf
- https://elearning.mtsn-saber.com/__statics/gudangsoal/files/free-minecraft-packs_GM479516143.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_off00004b94.bin` `11e2da8a3031da04199eaea10f5ce51b5f29a774fbaa11930056440dd48647c3`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B94	25164 bytes
`font_01_sfnt_off000084fd.bin` `4b9e97571f76fbd37980e49efa03e4d0776fec80245dbf17b6cc6ba6596e58ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84FD	18584 bytes

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