Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ddd751e64e2f21a…

MALICIOUS

PDF

42.5 KB Created: 2020-08-20 21:09:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7235cf83aa5515670b82dc56a57d039b SHA-1: 075ac7a830c93ea07d8501b3b465db22d30503a7 SHA-256: 8ddd751e64e2f21a0e94cf5a229ac4ae1cb9a7b8919c720121e34b9565196258
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=colliers+canada+cap+rate+report+q1+2019'. This URL is part of a link farm designed to appear as a legitimate financial report, likely to trick users into clicking. The document body, though heavily obfuscated, contains the same redirector URL. The presence of numerous external links, many pointing to Shopify domains, further supports the SEO link farm heuristic.

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.cc/pify?keyword=colliers+canada+cap+rate+report+q1+2019
    • http://files.australianfoodie.com/uploads/1/3/1/4/131483955/3712783.pdf
    • http://tibek.4-ucorp.com/uploads/1/3/1/3/131380181/ebcfe3dd.pdf
    • http://files.4x4unity.com/uploads/1/3/1/4/131455398/fovevorapujalira.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/71068421541.pdf
    • https://cdn.shopify.com/s/files/1/0431/7760/7324/files/59121917057.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/wuzenaxunigirutufadu.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/bioenergetics_grade_11.pdf
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/algebra_1_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/tazorinutidimem.pdf
    • https://cdn.shopify.com/s/files/1/0437/6405/6225/files/49172492083.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/girotimovu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/jupabipupoxuwilimam.pdf
    • https://cdn.shopify.com/s/files/1/0434/2130/2935/files/28548929586.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_off000058f7.bin
a4f811d06fe46784c89d863a6e5645d27a37266d0825352430ebac9e78128a1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58F7 5488 bytes
font_01_sfnt_off00006ba3.bin
01a74d9712e78fb83141b4b8f8b7e71f01f20c51954ea724986ff5e4d67c3292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA3 10528 bytes
font_02_sfnt_off00008f12.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F12 4324 bytes

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