Malicious PDF — malware analysis report

Static analysis result for SHA-256 c747e32d26315f46…

MALICIOUS

PDF

42.7 KB Created: 2020-08-31 22:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95b35e79122c401b18840bf45d5d0faf SHA-1: cd92d4ffaf37fe38df7c946194841fbcb0ca66fc SHA-256: c747e32d26315f46dbc47012e20159f5b6d013ba68acbcbb97f76d90cce9f579
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'tv series dynasty on toxicwap' and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many pointing to Shopify, likely to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

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/wix?keyword=tv+series+dynasty+on+toxicwap
    • https://cdn.shopify.com/s/files/1/0435/2966/6724/files/fuzebuvipoxuniliper.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/kowagenugolarupof.pdf
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/91011221039.pdf
    • https://cdn.shopify.com/s/files/1/0440/9557/0072/files/vapusuripapajesovikuvutin.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/tatomulirekujaderi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/21553500265.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/kunaxepedutekotovep.pdf
    • https://cdn.shopify.com/s/files/1/0431/1433/2309/files/38979441032.pdf
    • https://static.usrfiles.com/ugd/b910ae_fce62e0dc7a047468f5d5ca8f3836380.pdf
    • https://static.usrfiles.com/ugd/3b7182_a2d4deb0233c4aa7aa4b82e8f1edee24.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_off00005f50.bin
4bb74c3ab0333a9adb4987346f4671fa976791f4a2c1b5473670e9d7284040ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F50 5308 bytes
font_01_sfnt_off0000718c.bin
3312189fc9d3abe5a63bfc0ee8efcb40faa5f2de213e421b65107e9501758524
pdf-font-stream PDF embedded font (sfnt) at offset 0x718C 14576 bytes