Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55d3eede1632a7a…

MALICIOUS

PDF

40.1 KB Created: 2020-08-14 11:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 676ccf45b80a805b4c1bf853abb8cff5 SHA-1: cc917dd4ec3c661be91c90dd9580531e0db7269d SHA-256: e55d3eede1632a7ade97baef66b161f7446fdea84ce7795253dc7c1d85fde9cc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to external PDF files hosted on Shopify. One of the primary links, however, leads to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'recurring payment authorization form', aligning with the malicious redirector's purpose. The presence of a malicious redirector suggests the document is intended to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

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/pify?keyword=beautifully+said+pdf
    • http://wixuvixin.plekhanoff.com/uploads/1/3/0/8/130813042/1048108.pdf
    • http://dekuxub.westexaudioelectronics.com/uploads/1/3/1/6/131637136/gesefukezaxeke.pdf
    • http://files.rowdygainesmastersclassic.com/uploads/1/3/1/6/131606118/2138571.pdf
    • http://files.foxxpropertiesllc.com/uploads/1/3/1/4/131437423/jexevetejut.pdf
    • https://cdn.shopify.com/s/files/1/0437/1798/4405/files/recurring_payment_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/4452/8550/files/fonatufoxawinawonipamigis.pdf
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/bazuzerakut.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/9664246784.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/kekesisadifusupe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/open_file_in_browser_using_java.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/jodapopobulabuvu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/19645985646.pdf
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/24599843263.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/tibisirurovidawavi.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_off0000609f.bin
a4e020082726a618488efbe21a6aaa67f38b05b1a39cd2e83fbca1aaa8020b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x609F 5088 bytes
font_01_sfnt_off0000720d.bin
97fc47206410236bd4206ba5e4820a3f9672a3f3998a377ebfb72a7c4a4aeb68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720D 9976 bytes

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