Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15a97e4806b0cdb…

MALICIOUS

PDF

37.2 KB Created: 2020-08-18 17:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57a707ae082e0b0451bf91e4775d3b1e SHA-1: 09d67e96edbc9e111cc2df7862a2ae429d4cad25 SHA-256: d15a97e4806b0cdb08a6ebfa0a9789844bddb538ae821d1855bafa662ad2cb7f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented in the document body as 'beef goulash nutritional information'. This suggests a phishing or redirection attack. 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.com/pify?keyword=beef+goulash+nutritional+information
    • http://pajirix.paulangiolillo.com/uploads/1/3/0/7/130739309/1379ff63ec233.pdf
    • http://lovek.amazingmagicbeanslc.com/uploads/1/3/1/4/131406390/b8b2d40.pdf
    • http://files.makelifehd.org/uploads/1/3/1/6/131636907/9193939.pdf
    • http://tilexiz.cutekidscrochet.com/uploads/1/3/0/7/130738971/degapo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4086/4421/files/46600854612.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6711/files/calculating_standard_deviation_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/82969357480.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93434530871.pdf
    • https://cdn.shopify.com/s/files/1/0430/4214/4407/files/rakiguwoguvexololelafeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/70009431164.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/vilesoves.pdf
    • https://cdn.shopify.com/s/files/1/0432/4756/7010/files/pmbok_guide_5th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/24203209780.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_off000053d3.bin
402311b997f572258e7c5ac0a35f713c761173decb4fa353e6f1b90c413ac99a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D3 5232 bytes
font_01_sfnt_off00006571.bin
531c161dfc87f4beaac2049cd47b7d74c4c11871644fbc1beef603e502c9261d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6571 10164 bytes

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