PDF malware analysis — malicious · 84efef33b2e4ef45

MALICIOUS

PDF

47.3 KB Created: 2020-09-02 15:19:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4f9c3f3f213ed03493dc1cea3b129e5 SHA-1: 2fdcd4fff189dc19a231bff7a61cce4cf1829e0c SHA-256: 84efef33b2e4ef45c0bfdedf6c08a6714419bdb067e1210eb79d1ba09751afa7

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged for containing a malicious redirector link and a link farm. The primary malicious URL, https://ttraff.club/wix?keyword=apa+format+bulleted+list+citation, is likely used to direct users to a phishing or malware distribution site. The presence of numerous external links suggests a strategy to artificially inflate search engine rankings or distribute content across multiple domains.

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.club/wix?keyword=apa+format+bulleted+list+citation
- https://static.usrfiles.com/ugd/45fd81_316cd01342e34b67b86ac779b5ef49b8.pdf
- https://static.usrfiles.com/ugd/e4a001_6d0cc26da9bb4258974e94475d6c050a.pdf
- https://static.usrfiles.com/ugd/b4a829_f7dca05849a943588b9a6f0f11f5e834.pdf
- https://static.usrfiles.com/ugd/b8c837_21cb4e68ab704fa3b620b496ca41d391.pdf
- https://static.usrfiles.com/ugd/b8c837_c5e5b59c4a2642a3954808d6d017661f.pdf
- https://cdn.shopify.com/s/files/1/0447/3608/6172/files/search_a_on_mac.pdf
- https://cdn.shopify.com/s/files/1/0435/5552/0667/files/duxoga.pdf
- https://cdn.shopify.com/s/files/1/0431/8366/9412/files/fupuposebikobisuvu.pdf
- https://cdn.shopify.com/s/files/1/0429/0940/1251/files/74503147871.pdf
- https://cdn.shopify.com/s/files/1/0431/7108/6492/files/43280848207.pdf
- https://static.usrfiles.com/ugd/c63dba_15bc5f3ab75b49c0a71f78be9879ee26.pdf
- https://static.usrfiles.com/ugd/e2f197_37d5aaa5a85245f7a27ea5759ec35493.pdf
- https://static.usrfiles.com/ugd/b8c837_e8353486f17742b387d5f83487f42cb9.pdf
- https://static.usrfiles.com/ugd/b4609a_66c572421c1c478687046b092333bcc4.pdf
- https://static.usrfiles.com/ugd/b8c837_fc1383b23ffe42938e303f7af01c5fc7.pdf
- https://static.usrfiles.com/ugd/6f53d7_c211910e70d041f5a8f73285e30183d0.pdf
- https://static.usrfiles.com/ugd/07625c_f6a8d254381e4e0791166dc1b38e12ed.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_off00007aed.bin` `06f616c2395d4bf91c80392e7e0dfe4b83f3d914e967db868695b711e7904f39`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AED	5432 bytes
`font_01_sfnt_off00008d4c.bin` `ead0f71d72c0d5a57d3b5d4335da700d0b0f53838110ddc2e6974bb556813efd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D4C	10120 bytes

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