Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2c67dd75654c72…

MALICIOUS

PDF

52.0 KB Created: 2020-08-31 00:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2248f977891bfea7ef088765c236636 SHA-1: f1990c3c1072da1e3e022fcb978bf2166abccf76 SHA-256: 2b2c67dd75654c72b38ed009606d999752fc3a603cfa94f3b8055e966bc7603d
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised with a lure related to 'Jackie chan adventures'. The document also contains a large number of links to Shopify-hosted PDFs, likely part of an SEO link farm to improve search engine ranking for malicious content. 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.cc/wix?keyword=jackie+chan+adventures+1+sezon+t%25C3%25BCrk%25C3%25A7
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/dezadojize.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/60523494753.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/16806327372.pdf
    • https://cdn.shopify.com/s/files/1/0431/0718/8898/files/sivatokokodafipemotakop.pdf
    • https://cdn.shopify.com/s/files/1/0434/6642/4477/files/customer_details_template.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/lulimonizevufutubewoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8053/8529/files/98360306257.pdf
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/vinerewowilanudizodez.pdf
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/todakuje.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/56396769877.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.

FilenameKindSourceSize
font_00_sfnt_off000089b6.bin
9089a2f6f85d89296db679aa117c51787557278d1151f97ae7f4e0bd2f5476c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89B6 5512 bytes
font_01_sfnt_off00009bf9.bin
21d969cb4169d2b28896d4a2cc0480a34567a1384215a400c5659c8cf5cd820d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF9 12284 bytes

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