PDF malware analysis — malicious · 211c4c646953728f

MALICIOUS

PDF

48.0 KB Created: 2020-07-30 20:22:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b24849ae684c572d8b482e66a2fda317 SHA-1: 8607fc7e77be05cf41d5bd8ac0d8edeb3ad7edcc SHA-256: 211c4c646953728f3af46888b837272caab4f0f4a8357508469fc95d49db10ea

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a high density of external links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be malformed or corrupted, but the presence of numerous links, including one to a malicious redirector, suggests an attempt to lure the user to a harmful site. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://ttraff.ru/pify?keyword=les+vertus+du+beurre+de+karit%25C3%25A9+pdf
- http://files.jclandscapingandmasonry.com/uploads/1/3/0/9/130969855/masoxis-gutifavujifese-jakitojosaxo-difitomadebuv.pdf
- http://files.b-wise.guru/uploads/1/3/2/6/132683040/36c8b08217c.pdf
- http://files.merakicowithlove.com/uploads/1/3/0/7/130740124/fa2220705c.pdf
- http://files.danvillepublicworks.org/uploads/1/3/2/3/132303077/vijegizi-lesizob-webob.pdf
- http://files.meraki
- https://cdn.shopify.com/s/files/1/0431/7030/0061/files/19087810720.pdf
- https://cdn.shopify.com/s/files/1/0432/4353/6541/files/gusefejodagunikigijo.pdf
- https://cdn.shopify.com/s/files/1/0427/7318/4678/files/85179021412.pdf
- https://cdn.shopify.com/s/files/1/0432/1234/1412/files/50652922171.pdf
- https://cdn.shopify.com/s/files/1/0438/2218/6656/files/buralifafemomofogi.pdf
- https://cdn.shopify.com/s/files/1/0432/0041/3856/files/68451977911.pdf
- https://cdn.shopify.com/s/files/1/0433/2588/2518/files/39350103293.pdf
- https://cdn.shopify.com/s/files/1/0431/1970/6269/files/63439776996.pdf
- https://cdn.shopify.com/s/files/1/0434/0826/1287/files/75564256387.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/julanefiwozuxam.pdf
- https://cdn.shopify.com/s/files/1/0433/1234/9334/files/zigaxogifazimorisif.pdf
- https://cdn.shopify.com/s/files/1/0429/0225/7823/files/26786777219.pdf
- https://cdn.shopify.com/s/files/1/0431/2167/2356/files/lojasoputekipa.pdf
- https://cdn.shopify.com/s/files/1/0432/2741/4695/files/41564277963.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007a9e.bin` `2008a9943e94e8a81ecf2a9454050675175e39b65c210c291a13c9f331364fc0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A9E	5016 bytes
`font_01_sfnt_off00008b7b.bin` `ce6c108210fe9baa950a14f11d3ab9fc0dbf60aab040a41afcf435c7042c1836`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B7B	11836 bytes

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