PDF malware analysis — malicious · 9337684b8f93474f

MALICIOUS

PDF

46.5 KB Created: 2020-07-08 22:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9ef91f2aa46e1d421a5268182e455cfc SHA-1: 6c03424258b81971eca4495cd74eca87f57b5d6c SHA-256: 9337684b8f93474f7ee5adbf822e50b68deea4a1712e323de268cabaa9a0acae

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised within the document body, aiming to lure users to a potentially harmful website. The ML classifier strongly indicated maliciousness, and the presence of numerous external links, many with numeric slugs, suggests a link farm or SEO poisoning tactic. The embedded URL 'https://ttraff.cc/wb?keyword=how%20to%20write%20a%20press%20release%20for%20an%20event%20pdf' is the primary indicator of this redirection attempt.

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.cc/wb?keyword=how%20to%20write%20a%20press%20release%20for%20an%20event%20pdf
- http://files.revdonnarenfro.com/uploads/1/3/1/4/131452942/joduvozevutav.pdf
- http://files.co-opurbana.com/uploads/1/3/1/3/131383553/50e504ba.pdf
- http://files.mandokidslearning.com/uploads/1/3/1/6/131637385/vowomafemiw.pdf
- http://files.holdingupthesky.org/uploads/1/3/1/4/131453248/8414162.pdf
- http://files.delawaremusic.net/uploads/1/3/1/4/131437778/502d98e3f9fa38d.pdf
- http://files.laviishluxxe.com/uploads/1/3/0/7/130775942/1a41a3f.pdf
- http://files.bethinkcreate.com/uploads/1/3/2/7/132740218/70bd1ff781.pdf
- http://files.tuscanrenaissanceacademy.com/uploads/1/3/0/8/130813768/f64f74.pdf
- http://files.botlmovie.com/uploads/1/3/2/6/132681757/laxixazo.pdf
- https://zapirad.files.wordpress.com/2020/07/76390660136.pdf
- https://dadikopur.files.wordpress.com/2020/06/pakigakasalad.pdf
- https://buviwejurofo.files.wordpress.com/2020/06/gorolonivanav.pdf
- https://dafutinak.files.wordpress.com/2020/07/28627175170.pdf
- https://nadolafulon.files.wordpress.com/2020/06/74144173886.pdf
- https://vimimeva.files.wordpress.com/2020/06/17859214593.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.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_off00007a50.bin` `929e878fc0d5c0c22e813642f6fd99545711ebd3a843ed2c7abe42bc5c86f7b5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A50	4936 bytes
`font_01_sfnt_off00008b32.bin` `f6fec139f3830daac6fb69a20bf34765c8b04cda087fd14f9d5b730a53c4b6aa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B32	9896 bytes

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