Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea6547fab7e20fe…

MALICIOUS

PDF

44.5 KB Created: 2020-08-31 13:09:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b92e18846836d22f369111ba2d6f6b6b SHA-1: 2bc9d8ed78ad54d1e49eee9dfa126941660ee6bf SHA-256: eea6547fab7e20fe13874a939063a6b20d39f904f5fc731d2396092f8043757c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a PS3 update. The link leads to 'ttraff.ru', which is known malicious infrastructure. The document also contains a large number of links to other PDFs hosted on Shopify, likely for SEO poisoning or to obscure the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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/wix?keyword=ps3+update.pup+4.82
    • https://cdn.shopify.com/s/files/1/0435/9258/1288/files/vapazofejowa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/aneurisma_aorto_abdominal.pdf
    • https://cdn.shopify.com/s/files/1/0459/9562/2559/files/soguvewaxadapimusales.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_ab283e668c334aa6a43f893cb05bbe23.pdf
    • https://cdn.shopify.com/s/files/1/0431/9808/7328/files/dainik_jagran_epaper_patna.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5558/files/70003483082.pdf
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/vagijezogegejina.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/59489896525.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1073/files/xowewodefovi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059a6.bin
aec2d0e154dfbd20aaea5387aaa83a4a8572ea55e18266e97fc640967f7a353d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A6 5436 bytes
font_01_sfnt_off00006c43.bin
5fb85f2ce0470db751df2d443adcd5a294d5a4838e88cbcd7aa09bbc543ee369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C43 10208 bytes
font_02_sfnt_off00008f7d.bin
4471f92216f50ed59660dfde07325d7bc7936b356a877ae20405b399f7876638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F7D 16060 bytes

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