Malicious PDF — malware analysis report

Static analysis result for SHA-256 56cee81782d11ffa…

MALICIOUS

PDF

36.5 KB Created: 2020-08-31 05:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e2d7fc991faa7c3efa44d1e274c3389 SHA-1: 6974b9c706861c0214dd5a26f1d87923bee9b852 SHA-256: 56cee81782d11ffac53d5f9b5dfb34cba737b4bb42f3e29fadc4bd01a5d4aee5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary link, https://ttraff.ru/wix?keyword=elevator+action+death+parade, points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of external PDF links, many hosted on Shopify, which is a common tactic for distributing malicious documents or for SEO poisoning. No scripts were extracted from this sample.

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=elevator+action+death+parade
    • https://cdn.shopify.com/s/files/1/0449/7784/8488/files/59211004284.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/arsenal_fc_fixtures.pdf
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/variables_in_programming.pdf
    • https://static.usrfiles.com/ugd/b8c837_f08d4455223d4501a91f53f91d3fba49.pdf
    • https://static.usrfiles.com/ugd/b8c837_729d092be7254e4cacead38842b70740.pdf
    • https://static.usrfiles.com/ugd/353d00_074e9ab96ea84f328fbaf448c827ad5d.pdf
    • https://static.usrfiles.com/ugd/d54300_c5c935ceb96445f2a21d92526b8fef13.pdf
    • https://static.usrfiles.com/ugd/6cfc61_f4ce0fdb47f24673a79c3574c4673961.pdf
    • https://static.usrfiles.com/ugd/accd1f_3f14d63795644a21a9297ea9f3090c46.pdf
    • https://static.usrfiles.com/ugd/b8c837_76409856b9294693a9f06cf6e0a0edd5.pdf
    • https://static.usrfiles.com/ugd/82e28d_8c5cc0c4645a45ae98056dcb070c382e.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_off000052ad.bin
cf5076e75ae4aaf83294709582b280d52189a809b9b44ce8bf5b4421f326eb13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52AD 5000 bytes
font_01_sfnt_off000063b1.bin
0fea82072b8213f48a9404a5d92f35ab7a90e26ef7cf2c0d4e2ecbc99283c474		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63B1 9860 bytes

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