Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a3a58fb90f4089…

MALICIOUS

PDF

114.6 KB Created: 2020-08-11 08:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96630bab5a5477da41435065e0c3a86a SHA-1: 1acc282470736c9aa0d55c5eda36cfb8f7dcb58a SHA-256: a1a3a58fb90f4089a32006d76a874d5c64acc9064a829058c2874257fbbad811
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, a technique commonly used in SEO link farms to artificially inflate search engine rankings or to redirect users to malicious sites. One of the primary links, 'https://ttraff.cc/wb?keyword=physical%20education%20curriculum%20guide%20grades%201-10%20december%202013.pdf', points to a known malicious redirector. This indicates a social engineering attack aimed at luring users to malicious content under the guise of a legitimate document.

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/wb?keyword=physical%20education%20curriculum%20guide%20grades%201-10%20december%202013.pdf
    • http://files.woodyglenfarm.com/uploads/1/3/0/7/130776728/de3c362f2d6.pdf
    • http://files.griffis4history.com/uploads/1/3/1/8/131856135/3164092.pdf
    • http://files.debsbluemoonphotography.com/uploads/1/3/0/9/130969381/mukamejumerosugewe.pdf
    • http://vozolavo.adrienneleigh.com/uploads/1/3/1/4/131453540/1922536.pdf
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/honda_odyssey_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/33312660691.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/agriculture_technology_management_agency.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/sajenabi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/xomepibefinokira.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/wofezuduvugidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/fajan.pdf
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/the_new_vips.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/juwatanutokewotinez.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5322/files/redifubu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2621/8136/files/47302668936.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_off000178f1.bin
5f55f5eed2bddf8827fdd7e1d5ec3bb06e64183ca9996925fb4784424fb3123f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x178F1 6364 bytes
font_01_sfnt_off00018e6c.bin
ce5d87eac5471fe97a9739cddb7d3376877f89b3c5ec962fb1bdeb89cf166614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18E6C 14984 bytes

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