Malicious PDF — malware analysis report

Static analysis result for SHA-256 55b30dc3c1d6853f…

MALICIOUS

PDF

32.0 KB Created: 2020-08-31 08:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b4c05dce0bb36ced86a508d920aadc1 SHA-1: 19d157eb26e0f24465204d09a67e7a2f59f50eb1 SHA-256: 55b30dc3c1d6853f653f2f4c1c82acf9b71f0ebf3854e1115a83cf76b4a522d3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/wix?keyword=poison+every+rose+has+its+thorn+lyric`. This URL is embedded within the document body, suggesting an attempt to lure the user into clicking it. The document also exhibits characteristics of a link farm, with numerous embedded links, many of which point to Shopify domains. The primary malicious URL is the most critical IOC.

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=poison+every+rose+has+its+thorn+lyric
    • https://cdn.shopify.com/s/files/1/0428/3501/7884/files/bavulanolewetaraxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/5700/5222/files/98070629227.pdf
    • https://cdn.shopify.com/s/files/1/0434/0839/2353/files/leponoxomitab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8515/files/antigona_sofocles_millor_fernandes.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8454/files/jigejukimomolagufez.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/66114701446.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/vopesomawuzirupuv.pdf
    • https://cdn.shopify.com/s/files/1/0439/2864/9896/files/pabupufos.pdf
    • https://static.usrfiles.com/ugd/10a4aa_bfc0a2038f7d4864ab1553ce21d67022.pdf
    • https://static.usrfiles.com/ugd/21a131_ef2f4510c14442d3bc93230b961174dd.pdf
    • https://static.usrfiles.com/ugd/7dd30d_018460fb734a4b59bd0e7d3c205ad834.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d09c0aa0c0d4fd388fc63bcea15a383.pdf
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/pasikesezitaragopowikedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/lowaviragatawezogupixani.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_off000043c3.bin
fc06db4aa1740bf4a41004ab740d015a9358d9a77ffd9f08a26b9610e66bad23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43C3 5052 bytes
font_01_sfnt_off000054ed.bin
0f5bd402ee73eb458bd1c7f9a1695f57e111b66aebe6ef91fc0f9a7941c1920d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54ED 8976 bytes

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