Malicious PDF — malware analysis report

Static analysis result for SHA-256 c86e36aa0d371138…

MALICIOUS

PDF

40.8 KB Created: 2020-09-04 22:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62b524259ad3282313615a060425ccd9 SHA-1: 93b89b15aac33b57fdd7e2318badb64424050d91 SHA-256: c86e36aa0d3711385184d7598fbb5df2c0e53ccb0c4a3a7bfc4123327469eeb2
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a payment acknowledgement. The document body and heuristics indicate a lure related to financial transactions. The presence of numerous embedded links, many pointing to Shopify, suggests an attempt to create a link farm for SEO poisoning or to host further malicious content.

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/wix?keyword=acknowledgement+of+receipt+of+money+template
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/fusionner_excel_vba.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/91846588004.pdf
    • https://cdn.shopify.com/s/files/1/0457/6405/1100/files/tipos_de_organizacion_industrial.pdf
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/fipimebeno.pdf
    • https://static.usrfiles.com/ugd/d775a9_6d0526663ddd450b9fd985b142f446dc.pdf
    • https://static.usrfiles.com/ugd/a91264_c5ede4db894644c59057ac429c39dcc6.pdf
    • https://static.usrfiles.com/ugd/fa6f14_54f812983a164d9abd40b70747578602.pdf
    • https://static.usrfiles.com/ugd/af0aa9_ba700c2e31394eb8883f05616b019a47.pdf
    • https://static.usrfiles.com/ugd/b8c837_7e6aea36c5cd4d009ef0b9ffa9e8055f.pdf
    • https://static.usrfiles.com/ugd/a43ec6_e94812cb03694e21a9942d0ef48d8c52.pdf
    • https://static.usrfiles.com/ugd/b8c837_e9949b50c03744fc9e4eac8629827ea3.pdf
    • https://static.usrfiles.com/ugd/3254bf_db01f06d3d0e48c098d05614e971484a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0536c9bc57ad472bbb5a5fa32ff314f3.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_off00005f7a.bin
b86f7e822956ba143a076fa9861c17c7d4a663b0e6527264aa5ef9d22b3a1311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7A 5544 bytes
font_01_sfnt_off0000726c.bin
876e8176469282b744b80a0d68fab2b50c3705eb41c355a063963be0094286fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 10580 bytes

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