Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee44bf409c2bd469…

MALICIOUS

PDF

48.4 KB Created: 2020-08-05 07:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 941395b1d74319fe57addaefc8f94544 SHA-1: 7cd4831a0fa946a5dacd7721ad6a09ef7e7be92d SHA-256: ee44bf409c2bd4694cc7f13d543cce7099033b1f425760f84b4f62ab1e6abc65
120 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic firing for a malicious redirector. The primary redirect URL, https://ttraff.cc/pify?keyword=workers+compensation+act+pdf, is designed to lead users to potentially harmful content. The document body, though heavily obfuscated, contains references to this URL and other PDF links hosted on Shopify, suggesting a link farm or redirection scheme.

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=workers+compensation+act+pdf
    • http://files.chickyfarmsvintage.com/uploads/1/3/0/7/130776680/9894132.pdf
    • http://files.olivewavz.com/uploads/1/3/2/6/132680813/mezajidaxerefo-sonimin-zezekikisatik.pdf
    • http://konebipe.barrsbarsltd.com/uploads/1/3/2/3/132302780/nelajet_muxarazes_wudikafef.pdf
    • http://files.monskycreations.com/uploads/1/3/0/7/130738969/38011.pdf
    • http://files.joshklemons.com/uploads/1/3/2/7/132740743/pemawinom_bozuzike.pdf
    • https://cdn.shopify.com/s/files/1/0434/3817/8470/files/18459448773.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7340/files/homeworx_hw_150_pvr.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/belitazazodojigoji.pdf
    • https://cdn.shopify.com/s/files/1/0429/0494/4807/files/exploratory_spatial_data_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/78601055662.pdf
    • https://cdn.shopify.com/s/files/1/0432/4373/3154/files/total_gym_xls_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/lexemuworonupopataputuke.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/defujasogimaxupomogivazo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1752/7715/files/nogapexuvekefisoluvugigib.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2622/files/43489186809.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/68053318686.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/pamagomuxafavalokobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/99810243233.pdf
    • https://cdn.shopify.com/s/files/1/0429/5609/5644/files/vexewujezekumat.pdf
    • https://cdn.shopify.com/s/files/1/0434/1543/7468/files/sonirop.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_off00007ee8.bin
90104b6a3aecb7a8db20689fe340774b9d205d8366d67821c5c508ecb62bf6f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE8 5344 bytes
font_01_sfnt_off00009114.bin
d10e5fb58695f79e657460d8e126a18973efc6ab14db19337108c539617387d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9114 10304 bytes