Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08434e72e030834…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 09:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54c8a9e1f0c7efe9094514ee73f845bc SHA-1: da7f1c424c246bc4f7f3f5ca460b805b1668f72e SHA-256: e08434e72e0308349a3c3fc86e546fd873c89e67f349375bf395b7e1feb153f6
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting an invoice or payment lure. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site, likely for credential harvesting or malware delivery.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wb?keyword=gl%20manual%20clearing%20tcode
    • http://files.cbbankevents.com/uploads/1/3/1/4/131437513/7840742.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/10695686887.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/wuniziruwak.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/chrome_os_for_virtualbox.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1448/files/zobetalanerafemijebew.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4307/files/10852330643.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/78541014520.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/enchiridion_epictetus.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_off000062e8.bin
d0427c0269bcd36643caed5f11c026cc90fb4b0d95a93548d3fd8cf2a6964b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 5112 bytes
font_01_sfnt_off0000742d.bin
86905bedf0d06bb5da6a618242af4a83d8992f5eb28a66424f1270d1edbea45c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x742D 10020 bytes

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