Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6d7fbd7fef76e28…

MALICIOUS

PDF

45.1 KB Created: 2020-09-06 01:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 716c85ba94397fad4355f81c1bce7472 SHA-1: b37156b925b1d0e99f18c03b770d85fdf33f1eed SHA-256: d6d7fbd7fef76e281d259664ebc192b52b1b34012d15d0d1cda5c1eb75e48fb4
120 Risk Score

Malware Insights

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

The PDF file contains a link farm of 26 external PDF documents, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests a social engineering attack designed to lead users to malicious content through a series of redirects and linked documents.

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.link/wix?keyword=feather+tattoo+template
    • https://static.usrfiles.com/ugd/b8c837_fcca063b45c240baae00c600f19fdf43.pdf
    • https://static.usrfiles.com/ugd/f515ca_edabff40c0d0442fa958700f4ed5c736.pdf
    • https://static.usrfiles.com/ugd/804ff6_f076674d07d74de29e5e78cd9b44b7dc.pdf
    • https://static.usrfiles.com/ugd/90d19e_430829ecf90e49db884c4a6afc9636f5.pdf
    • https://static.usrfiles.com/ugd/cdb50c_ec968080590842dbb15377096c482e0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ebb98241156449580f79146050ad34a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b0858a8111249ca9bf11a06f1dafa58.pdf
    • https://static.usrfiles.com/ugd/3be3a7_595295b79e8f4c74b874978626e73e66.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/campbell_biology_9th_edition_test_bank.pdf
    • https://cdn.shopify.com/s/files/1/0438/3490/0642/files/zozel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0163/4213/files/chronic_heart_failure_guideline.pdf
    • https://cdn.shopify.com/s/files/1/0434/9198/3512/files/87137924437.pdf
    • https://cdn.shopify.com/s/files/1/0431/8009/7687/files/pride_scooter_parts.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/
    • https://static.usrfiles.com/ugd/804ff6_f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073e8.bin
8914d67a9d041e392eceae15adea5b789be5e0d77bccee3c5a3f0fa4437db566		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E8 4836 bytes
font_01_sfnt_off0000842b.bin
b05c5a64c29c8ca199f629240af3e9d3ae48da5402ae690ef2423c6f9d444b22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 10364 bytes

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