Malicious PDF — malware analysis report

Static analysis result for SHA-256 4558ae800e051865…

MALICIOUS

PDF

43.2 KB Created: 2020-08-24 23:24:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c382db1d5d2353d8b432239f4f3dfc06 SHA-1: f14848f4c297dc1ebb9c5e307a174db074b79228 SHA-256: 4558ae800e0518652c55145cd6379c6533977d25e2be60a84d91750961b57ba0
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to invoices and payment, indicated by the 'SE_INVOICE_LURE' heuristic. It embeds multiple external links, with one identified as a malicious redirector ('PDF_MALICIOUS_REDIRECTOR_LINK') pointing to 'https://ttraff.ru/pify?keyword=credit+note+against+invoice+template'. The 'PDF_SEO_LINK_FARM' heuristic further suggests a large number of outbound links, many hosted on Shopify, potentially for SEO manipulation or to obscure malicious destinations. No scripts were extracted from this sample.

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.ru/pify?keyword=credit+note+against+invoice+template
    • http://files.compassionatelife.net/uploads/1/3/1/0/131070149/keputokodubavemit.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/92907545356.pdf
    • https://cdn.shopify.com/s/files/1/0447/7979/8679/files/the_third_jesus_deepak_chopra_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/90212448337.pdf
    • https://cdn.shopify.com/s/files/1/0432/2964/2911/files/saxolenixawatoxugaro.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/ignou_ma_public_administration_disaster_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/6426/1797/files/bathukamma_patalu_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/analytical_mechanics_of_gears.pdf
    • https://cdn.shopify.com/s/files/1/0446/3765/1107/files/comma_practice_worksheet_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/2597210545.pdf
    • https://cdn.shopify.com/s/files/1/0452/6243/8560/files/desktop_support_resume_template.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_off00006af5.bin
523cad7d32b5e7159e271b681ba7b7dfc2ac1d1eef8c4befdcb1ce8d82efbaf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 5356 bytes
font_01_sfnt_off00007d23.bin
0cce30635e626996a0fb034967172583b7784e86851deeee5af8c390bf547586		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D23 10332 bytes

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