Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebe1d87fc793991…

MALICIOUS

PDF

38.5 KB Created: 2020-09-06 07:32:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e72a91f75c1e9c1bade6c4decda7f4f SHA-1: d85da6629203a5e2aa83f3d0c372c9deb8b65b8c SHA-256: cebe1d87fc793991a52a2e8eb97e44d3c24159dcf8e1ccf11782ee7b55d10c7b
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a redirector link, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to a weather report and the malicious URL. The primary malicious URL, https://ttraff.me/wix?keyword=ashton-+under-+lyne+weather+report+today, is identified as a redirector. The file also contains numerous links to static.usrfiles.com, which are likely part of a link farm to improve search engine ranking for the lure.

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.me/wix?keyword=ashton-+under-+lyne+weather+report+today
    • https://static.usrfiles.com/ugd/b8c837_32e53d90a49a4979b4211f2d94e74721.pdf
    • https://static.usrfiles.com/ugd/3b7182_686d74a2b2dd448b9c5b97ee20e07ed5.pdf
    • https://static.usrfiles.com/ugd/e49726_21c9a37f8f5e4141bc04076c71c89686.pdf
    • https://static.usrfiles.com/ugd/436160_a1e77693f05444e48dd5ea62ee9addb3.pdf
    • https://static.usrfiles.com/ugd/d3758e_573a45819c374ecea5696fd6045f9b9a.pdf
    • https://static.usrfiles.com/ugd/e481ce_8eafc4c7e1804dd08a886b74d6d17c16.pdf
    • https://static.usrfiles.com/ugd/26481d_59654d33922c43c6b561cc74ebe6e332.pdf
    • https://static.usrfiles.com/ugd/7dfe85_3697d7ec56e2482cb8bd64415a04802b.pdf
    • https://static.usrfiles.com/ugd/f5a024_95cc58d4428b4275a11585f76a751043.pdf
    • https://static.usrfiles.com/ugd/bae363_9b01a0142bc74f328c6fdd963bff44a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_fea7b79cd52c4594bcfd75c3de00e607.pdf
    • https://cdn.shopify.com/s/files/1/0436/9717/6741/files/anxiety_and_avoidance_cycle.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4902/files/segugulot.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/ejercicios_de_problemas_de_ecuaciones_de_primer_grado_para_imprimir.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_off00005169.bin
7253ae7ed76ffb62a79a9551212a3f818dbd3d301451a68061a659a62a55540b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5169 5264 bytes
font_01_sfnt_off00006365.bin
04f8d855a0a03beb6035f536a5c412bb25d7d338a46eda157b096bbcab5839ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x6365 13236 bytes