Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5bb6babef085d1d…

MALICIOUS

PDF

39.9 KB Created: 2020-09-01 02:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81ba9559dce395a03317fc2627bfd61f SHA-1: e3f2c18e5f2247638e88b24378ceb9dd38a445cc SHA-256: e5bb6babef085d1d51e38cecd20126540a0ef145ece7d3f75c6dbf592394e5ec
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, 'https://ttraff.cc/wix?keyword=bariatric+surgery+guidelines+aace', is identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. The document body is heavily obfuscated and contains the malicious URL, further supporting this attack pattern.

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=bariatric+surgery+guidelines+aace
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/6821900552.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/adobe_after_effects_cs6_free_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0441/1287/1576/files/zivitofutimuberosokozedis.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/gexizarelikezoletoge.pdf
    • https://cdn.shopify.com/s/files/1/0431/0053/6986/files/10544592717.pdf
    • https://cdn.shopify.com/s/files/1/0464/1161/2328/files/vegegiredurusukis.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/jixuz.pdf
    • https://static.usrfiles.com/ugd/b8c837_1072f2984b824961b8490174f6a3f09d.pdf
    • https://static.usrfiles.com/ugd/fe83c3_eb692dd5d9a04570a52f7f953e5a336a.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_off00005bfa.bin
e0b537d1577603fda4d5498b2abc4c5217095868d7eaae7f38a9757983ca45a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFA 5260 bytes
font_01_sfnt_off00006df0.bin
c512986a41c85cb40aa519145f43dfe88216bff3c601acd8d378bc5a75b1c681		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF0 10948 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.