Malicious PDF — malware analysis report

Static analysis result for SHA-256 5601d0872c2ae281…

MALICIOUS

PDF

45.3 KB Created: 2020-08-05 17:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aa1b40f62f647a319415cc6da58673e SHA-1: f7020f922ffaa894d3ed80669cd1f33f2db7d06f SHA-256: 5601d0872c2ae281aa05ed39c593012b58fc83cda6ab418dd61bef433da1423e
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a malicious redirector, as indicated by the critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. It contains a substantial number of embedded links, forming a link farm, with the primary malicious URL being https://ttraff.ru/pify?keyword=annihilation+pdf+vandermeer. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a coordinated effort to distribute malicious content or phish users. No scripts were extracted from this sample.

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=annihilation+pdf+vandermeer
    • http://files.budsdoobieclips.com/uploads/1/3/1/4/131454304/b7057e1160d8.pdf
    • http://files.fropros.com/uploads/1/3/0/7/130775734/d09a7232ab5e51.pdf
    • http://files.parentfirstcouncil.com/uploads/1/3/1/6/131606688/lipobi_jotafode_xurup_menipujede.pdf
    • http://files.jasperskiteam.org/uploads/1/3/1/6/131636726/9e15e1d.pdf
    • http://files.saltdancecompany.com/uploads/1/3/0/9/130969532/3767928.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/58203344199.pdf
    • https://cdn.shopify.com/s/files/1/0450/4974/1464/files/les_affinits_lectives_goethe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3418/0769/files/gofotenalisusezoxitezujo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/jomuwapojolavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0691/7799/files/68292955221.pdf
    • https://cdn.shopify.com/s/files/1/0430/3775/3501/files/mudugivitidopigerag.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/xesode.pdf
    • https://cdn.shopify.com/s/files/1/0428/5975/7734/files/roxukisisatuxamirepagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/2008_toyota_highlander_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/54251492150.pdf
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/lebigugemezin.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/48632268383.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/wanululizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/xemen.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_off00007366.bin
1fcb355f294d33f6437a4e7408d78501df68406fd851c8a71d651a3b69b61104
pdf-font-stream PDF embedded font (sfnt) at offset 0x7366 5152 bytes
font_01_sfnt_off000084cd.bin
3cca82f192b2450e52a65f9ae437722fa9990aebe194140b2f294eb933c15c78
pdf-font-stream PDF embedded font (sfnt) at offset 0x84CD 10224 bytes