Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b04af05b808df9f…

MALICIOUS

PDF

33.7 KB Created: 2020-08-08 19:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d3785267fcfeca733dd28b12c806167 SHA-1: 5642a69b66ea82825dbbfeafb05321383ef2de70 SHA-256: 2b04af05b808df9f46c99d89fd6f6d8de2ed94d71a23a54007daa93a112fff22
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains text related to downloading a PDF, suggesting a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=colour+blindness+test+book+pdf+free+download, which is likely used to redirect users to further malicious content.

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=colour+blindness+test+book+pdf+free+download
    • http://files.fusionlandscapedesign.co.nz/uploads/1/3/2/7/132710661/falinaravo.pdf
    • http://files.danahamilton.com/uploads/1/3/2/6/132683463/176803ab795ee.pdf
    • http://files.pentip.co.uk/uploads/1/3/1/6/131637889/nizap.pdf
    • http://files.elisebiersma.com/uploads/1/3/2/6/132695329/tudemegumebomi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/install_aws_cli_debian.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/46429721842.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3152232763.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3163/files/34524723205.pdf
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/63221196366.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/wifasol.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/xonumenilomirowoxozuteb.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/wexuvubeke.pdf
    • https://cdn.shopify.com/s/files/1/0432/8819/9332/files/kejefo.pdf
    • https://cdn.shopify.com/s/files/1/0436/7086/4025/files/49501647904.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_off00004841.bin
7ce0e7288d0f07b534c36ba16b799477eb621139b45d88911ca83f2b0ffc5264		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4841 5236 bytes
font_01_sfnt_off00005a28.bin
93f0dd35b1ffc52625b211d1dfb37f122b281eece2a8c421eeef2118677d4e7a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A28 9352 bytes

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