Malicious PDF — malware analysis report

Static analysis result for SHA-256 954058f4bda452d1…

MALICIOUS

PDF

47.5 KB Created: 2020-08-14 08:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cfd032df7aa6a7de8c66e94b59141b4 SHA-1: e08b55ad22340b2f729eb848e5267e0c0fef5ce1 SHA-256: 954058f4bda452d1656d22f8757d01aea1e6290fd7d70e4cbebefa4db655edd8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=noroot+firewall+apk', which is presented as a lure for a firewall application. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify URLs, reinforcing the lure. The primary intent appears to be directing users to download a file from the ttraff.ru domain.

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.ru/pify?keyword=noroot+firewall+apk
    • http://files.tacmit.com/uploads/1/3/1/4/131407138/e2ff4e8c362.pdf
    • http://tosebuvot.align4life.net/uploads/1/3/2/8/132814097/nijawinovudoj.pdf
    • http://mirijir.beautifulbling4five.com/uploads/1/3/1/6/131606552/puvaxuditowuva.pdf
    • https://cdn.shopify.com/s/files/1/0429/8063/8879/files/filsafat_behaviorisme.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/blank_multiplication_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/bexukenoxafaxafekujumi.pdf
    • https://cdn.shopify.com/s/files/1/0433/6818/6024/files/goludigediwejorinepugixup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/89378565270.pdf
    • https://cdn.shopify.com/s/files/1/0438/2353/0141/files/kupenoxosipitebaveruved.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/case_446_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zumimulapowekulusevenire.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6669/files/bodopos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71135401618.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/bipep.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/culinary_terms.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000684c.bin
5f48cc646981dc36517eb4aa14a6020f3bf88a83a74c5961873755c047164550
pdf-font-stream PDF embedded font (sfnt) at offset 0x684C 4840 bytes
font_01_sfnt_off000078ed.bin
92328c36c3fefc9757372bc2ed3a97ec0fa0ab76e182c2a6e3c979b4b4489ae0
pdf-font-stream PDF embedded font (sfnt) at offset 0x78ED 10312 bytes
font_02_sfnt_off00009c85.bin
e7273338525a866f49bd556f13a0e46ce1e8513f85f175d9d987aa1f8b89adb9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C85 16068 bytes