Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecaf5eff57412768…

MALICIOUS

PDF

36.7 KB Created: 2020-08-30 08:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 933f2a7acd32b78fd0dab8a316e0a04f SHA-1: afdbbf520274a8e6b3a7998162d9f11d3cbb7f40 SHA-256: ecaf5eff57412768cde9bf8d4cfb2ef99705de69bc18a3533ce6237caeba2328
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Showdown of legendary legends tier list' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential SEO poisoning or link farm strategy to obscure the malicious destination.

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.me/wix?keyword=showdown+of+legendary+legends+tier+list
    • https://static.usrfiles.com/ugd/b8c837_a58955b17278475283872132fe14e640.pdf
    • https://static.usrfiles.com/ugd/d54300_e4cdfbf30ecf4d4f94f3a9ac48f76d39.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_2e5d286a47714952bab04b92c65b637b.pdf
    • https://static.usrfiles.com/ugd/5899d5_5a63f85a974d4d4f926567ed63ea3c9f.pdf
    • https://cdn.shopify.com/s/files/1/0429/2037/8524/files/gunewegogoro.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/guponimobekoguraxiga.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/xexukom.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/kavefumetibikufidakurego.pdf
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/vofiseterapujib.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/mobakatuwokitimitaramul.pdf
    • https://cdn.shopify.com/s/files/1/0441/2227/5992/files/59476259358.pdf
    • https://cdn.shopify.com/s/files/1/0427/7331/5740/files/windows_password_reset_disk_iso_free.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_off00004ecb.bin
73cb3a0c79b392bde4421fafd51a990931c05576d0eebf4d71896999f72be0e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ECB 5468 bytes
font_01_sfnt_off0000616c.bin
bd1d2fe7a6afb1de9aa4ffaf9b5508755800d86ae471ab632df84840dc2bbddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x616C 10728 bytes

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