PDF malware analysis — malicious · 50b663ed82a1bda3

MALICIOUS

PDF

39.8 KB Created: 2020-07-23 14:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 836eb47f074b0bee0752b2ae29689195 SHA-1: b131efc5879d20672a0ce215c5f21556189a408e SHA-256: 50b663ed82a1bda3dca2a128c6a3f71fb1cbe395cf1933e53603205bcfb2b0a5

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure via the URL https://ttraff.ru/pify?keyword=jr+boffo%2527+s+breakfast. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a mass of external PDF links, with the first being https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf. This suggests a phishing or scam attempt leveraging a link farm to distribute malicious content.

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=jr+boffo%2527+s+breakfast
- http://files.moliereexpressions.com/uploads/1/3/1/4/131407890/vujimofoxekatufodoki.pdf
- http://files.northwesternbreastsurgeons.com/uploads/1/3/0/8/130873958/3106833.pdf
- http://files.essenkitchen.com/uploads/1/3/1/3/131380083/gosojakavegiwa.pdf
- http://files.sycharlutheran.org/uploads/1/3/0/7/130740090/82a645b1b2bd33c.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
- https://cdn.shopify.com/s/files/1/0432/9350/7739/files/ririf.pdf
- https://cdn.shopify.com/s/files/1/0432/3141/2379/files/moboletoxesukegog.pdf
- https://cdn.shopify.com/s/files/1/0435/3287/7976/files/69102048657.pdf
- https://cdn.shopify.com/s/files/1/0433/5350/5946/files/58664099683.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdf
- https://cdn.shopify.com/s/files/1/0435/8039/1585/files/27316940255.pdf
- https://cdn.shopify.com/s/files/1/0434/0337/8839/files/junolanijiwudusig.pdf
- https://cdn.shopify.com/s/files/1/0431/0269/9681/files/jobup.pdf
- https://cdn.shopify.com/s/files/1/0428/6991/5814/files/477602459.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/355628232.pdf
- https://cdn.shopify.com/s/files/1/0428/8797/0975/files/56974714309.pdf
- https://cdn.shopify.com/s/files/1/0431/3917/0466/files/84976809650.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_off00005fe0.bin` `8e904a5700072e29ef035af509abb10ef0f8c0e953c944fb64f8777035e8f6c5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FE0	4588 bytes
`font_01_sfnt_off00006f87.bin` `fa8a90e9ae42e50c82e7d8e7f9b3343ac3ca58d4e8fbd81e4dea208904596108`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F87	9940 bytes

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