Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ea7dd26614f4ed1…

MALICIOUS

PDF

45.1 KB Created: 2020-08-29 03:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44ac1959d400785b4423b9fc551e0047 SHA-1: f355f77a0c626fa9fcd021164a8a0281f54ffe3a SHA-256: 4ea7dd26614f4ed191de59a7626303506bcd06a9191afb6cbf025c28e601d517
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on various domains. One of the primary links, https://ttraff.com/wix?keyword=cosas+para+masturvacion+femenina, is identified as a malicious redirector. This suggests the document is part of a link farm designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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.com/wix?keyword=cosas+para+masturvacion+femenina
    • https://static.usrfiles.com/ugd/b8c837_b7567d631f994d1c92a30438b87d2f49.pdf
    • https://static.usrfiles.com/ugd/b8c837_de4b68173cf7430ba8f07f3740fed396.pdf
    • https://static.usrfiles.com/ugd/b8c837_66510327cdb34ea39dd840bf1933f4ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c6cbe1d631246d2b27c5c00f0925dff.pdf
    • https://static.usrfiles.com/ugd/b8c837_1da48d54109c46d7999633c552ef3fab.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/goberomekovexi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/macos_sierra_says_it_cannot_connect_server.pdf
    • https://cdn.shopify.com/s/files/1/0462/6690/8834/files/childwise_fact_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/68958766178.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/centos_install_xdebug.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_off00006f60.bin
c6e882009c96890de9523b0161637c72be6a82c97cc3203a46123e535d2e641e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F60 5092 bytes
font_01_sfnt_off000080a7.bin
cb2f1bf53abe06093bbf39f61b5545d90bd987be06288572a1f74b1fcb606601		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A7 11504 bytes

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