Malicious PDF — malware analysis report

Static analysis result for SHA-256 3778cbb6f715234d…

MALICIOUS

PDF

99.6 KB Created: 2020-09-17 10:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89c86496ccf76f5663ea34ce5472049f SHA-1: 501494afbd7f9744aafac50d4a76d2ad484d8529 SHA-256: 3778cbb6f715234d5d8e285991ec0d5c91c35f8419a226bcce9cab602846bcc4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=the%20rural%20juror%20gif'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external links, with 'cdn.shopify.com' being a dominant host. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a social engineering attempt to direct users to malicious infrastructure.

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.com/wb?keyword=the%20rural%20juror%20gif
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/sokavedugetijopanu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/instagram_grid_free_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/gapejezek.pdf
    • https://cdn.shopify.com/s/files/1/0428/4183/3635/files/38306970013.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/42567589774.pdf
    • https://5c3b4ab3-2815-4a54-bcc2-5f26ae1b6132.filesusr.com/ugd/b65acf_e4dee4aa415a4326bdd4e6962273cec8.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/3279/7599/files/kaxunedotupog.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/17504344140.pdf
    • https://cdn.shopify.com/s/files/1/0430/6845/7113/files/toposazisomuwudamixiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/artificer_ua.pdf
    • https://f62f8cb5-62d5-49ab-96f4-d1ba69492d9e.filesusr.com/ugd/4aae87_6dbd75d5659a4d03bfd4938a456e84c7.pdf?index=true
    • https://4ff482c3-6236-4d10-a053-26a498508cbd.filesusr.com/ugd/8d5d69_0669ea662e164323a925be27dd7f69bc.pdf?index=true
    • 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_off000149a8.bin
133bddee103a840c17b10b60175d172468e0f02f41d32ede59aa61cb201c7f26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x149A8 4876 bytes
font_01_sfnt_off00015a3e.bin
11ae4e3b10cb9984b654d6dd3b2c555e3a5f71580099b53a577efb649b392eaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15A3E 11536 bytes

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