Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca790af8f4986e56…

MALICIOUS

PDF

39.7 KB Created: 2020-08-22 06:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53c221d7dd127abaf277dab18b10cbf1 SHA-1: 49142190e1256d96567e7d5c91c6f55abd19b657 SHA-256: ca790af8f4986e565f83e9bb826e60c7486fd9d9a9074ba3bf537495f687f80e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=rusty+lake+seasons+guide'. Another heuristic flagged the PDF as a link farm, with many links pointing to Shopify domains, but one suspicious link to 'http://fatuz.christiangreenlmt.com/uploads/1/3/2/6/132680981/5244080.pdf' was also found. The document body contains garbled text but includes the suspicious 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/pify?keyword=rusty+lake+seasons+guide
    • http://fatuz.christiangreenlmt.com/uploads/1/3/2/6/132680981/5244080.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/51482617944.pdf
    • https://cdn.shopify.com/s/files/1/0437/9466/1538/files/apk_vsco_x_fullpack_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/saparatodajisu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7629/files/kekevitegadomowogixi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/lifutusufadozidilogeb.pdf
    • https://cdn.shopify.com/s/files/1/0439/0069/8792/files/tojeze.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/lupotoxizejebaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/sozobabopefafivafeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7551/8107/files/2307136835.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91337380597.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7333/files/48163866564.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://cdn.shopify.com/s/files/1/0433/0687/7

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e4e.bin
67d1dbf6b70c96c8435fabdd95368ca7a7f49f01f0759a0a6d79ecff0e6f2303		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4E 5068 bytes
font_01_sfnt_off00006fad.bin
bd49247f89372b8c0e7f9bb23134127c673cefa0752639612192f953b5647c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAD 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.