Malicious PDF — malware analysis report

Static analysis result for SHA-256 8592405e5dfbc0b7…

MALICIOUS

PDF

38.2 KB Created: 2020-08-14 20:54:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ed07be99812c36e6eb09509c7e6a4af SHA-1: b77462503b43d55609506f5cfe0799d216156281 SHA-256: 8592405e5dfbc0b7cee89063cb953b8e612883176c73db0ac7c9d23bbdf81f79
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure referencing a 'self certification note' and includes a high number of embedded links, many pointing to external PDF files. One critical heuristic indicates a malicious redirector link (https://ttraff.cc/pify?keyword=self+certification+note+pdf), suggesting this is the primary malicious payload delivery mechanism. The presence of a 'LOLBin run command' heuristic further supports the likelihood of script execution for malicious purposes, though no specific script content was provided for detailed analysis.

Heuristics 5

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/pify?keyword=self+certification+note+pdf
    • http://didozuvor.tajpalacelouisville.com/uploads/1/3/1/4/131406437/kagifanibowiw.pdf
    • http://files.utrgvalpfa.org/uploads/1/3/0/7/130775529/vuzeluk.pdf
    • http://files.juniortravelers.com/uploads/1/3/2/7/132740982/4241228.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9212/files/pikuga.pdf
    • https://cdn.shopify.com/s/files/1/0430/8051/5745/files/67237381637.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87743453122.pdf
    • https://cdn.shopify.com/s/files/1/0431/0371/5481/files/aviones_de_papel_libro.pdf
    • https://cdn.shopify.com/s/files/1/0437/8286/5047/files/99569829072.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/curl_set_content_type.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1014/files/coca_cola_font_generator.pdf
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/bluebook_capitalization_rules.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3580/files/80318188455.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_off00005917.bin
37a65ba12ec240408fa7576a1417485e368130076e896e98953c0ee6f7d52a4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5917 5072 bytes
font_01_sfnt_off00006a59.bin
2b30b0575b5039e9c27d5d3b686a320e8de0befb99a4930672f27dd557238af0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A59 9912 bytes