Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5631b4945e6e333…

MALICIOUS

PDF

42.3 KB Created: 2020-09-18 04:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72ae36315282fa462c3667a9d6fb7574 SHA-1: 2ee0a81855006974d3b2a7b2cffeb1940610e43b SHA-256: a5631b4945e6e333781db29bbf00862b628273aaa92b2953791ae636faa592af
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. This URL is presented within the document body, likely as a lure for the user to click. The document also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or to obscure the malicious destination. The primary malicious IOC is the redirector URL.

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.club/wix?keyword=profaned+greatsword+or+greatsword+of+judgement
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/visajotefezoxosib.pdf
    • https://cdn.shopify.com/s/files/1/0434/1461/8277/files/matematicas_para_administracin_y_ec.pdf
    • https://cdn.shopify.com/s/files/1/0432/7666/4998/files/blitzcrank_build_s6.pdf
    • https://374ff7d9-e94e-473b-a04e-ce9638e87bc2.filesusr.com/ugd/735424_6a48cb4f60aa4f9e9a808bcce24e5c17.pdf?index=true
    • https://6e3faa45-a423-480a-a50f-b1ed98fbdd8e.filesusr.com/ugd/e643da_70d80d78b58f48dabbc0959979cc2c3c.pdf?index=true
    • https://0ac6c679-691d-4fae-b54e-15df6f3cc06e.filesusr.com/ugd/5e81b9_ed3977debec04a24a1e8ae9d26259d01.pdf?index=true
    • https://ff585309-dda9-4b07-8e1b-72735408aca6.filesusr.com/ugd/ff68bb_08873319cbc74109a7bd5fd01b2d03b4.pdf?index=true
    • https://8e71e46e-0156-42bf-ab8f-aa6e84ce1d9b.filesusr.com/ugd/5a1791_9ad0df0403ea47d197b89d51f7a33f39.pdf?index=true
    • https://4dba8261-bbf8-4798-b98c-84c1face7aff.filesusr.com/ugd/6e13d9_97f9b486c96d4041bce8feee357ed76a.pdf?index=true
    • https://e4f6a607-c5f2-4a98-b4bc-7baf14dc5684.filesusr.com/ugd/3be3a7_5a3fde9ebed94d45b273e9adf151616b.pdf?index=true
    • https://4e0e2daf-6d33-4e9b-81f1-c85f687ec59f.filesusr.com/ugd/003b86_126aa72fb07b4145b29cb814eb63f243.pdf?index=true
    • https://83b89b78-0869-4b72-9f98-04c9da4c5983.filesusr.com/ugd/cc3ca9_0bfd044772994ac6b15b7ded037d0ab7.pdf?index=true
    • https://0dde1f2a-15c2-4248-b110-f72edc5d4e59.filesusr.com/ugd/278743_ea1dee4db0f248a3924d8e129d7934f5.pdf?index=true
    • https://05c8c561-96bb-4161-8fd1-b75e0bd553a0.filesusr.com/ugd/ea2f88_1a17a85d0ec744b884a79bc45e3cd501.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/
    • https://05c8c561-96bb-4161-8fd1-b75e0bd553a0.filesusr.com/ugd/ea2f88_1a17a85d0ec744b884

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006572.bin
fc6859ef8b023d45f41249d292b9af1bf8520b5755e02d72d5185866436cd7f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 5364 bytes
font_01_sfnt_off000077b5.bin
fa4b0df9063a69554c30482133fc6970f93a4aba07e871598b814623139a1c82
pdf-font-stream PDF embedded font (sfnt) at offset 0x77B5 10692 bytes