Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b1cc891cc60b57b…

MALICIOUS

PDF

34.8 KB Created: 2020-08-27 17:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba2e32da989656265f384821cc6f1b56 SHA-1: b71120027a8a3719f89b39c05821a111c8c63761 SHA-256: 3b1cc891cc60b57be658029f7a7aa68671bbf5add0622ebb2392d3b6f47ef8fa
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The document body contains numerous URLs, with the primary one pointing to a known malicious redirector. This indicates the PDF's purpose is to lure users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=chiavenato+introdu%25C3%25A7%25C3%25A3o+a+teoria+geral
    • http://gewazur.crittersitterjc.com/uploads/1/3/0/9/130969959/lafag-xowujadupusozoj-piwadibesagituv.pdf
    • http://files.avianexotichospital.com/uploads/1/3/1/3/131379496/xuronafud_safez_madovanirarubev.pdf
    • http://files.martinedigby.com/uploads/1/3/2/6/132682640/neronazorukarub_rugivel_guwabikeruwa.pdf
    • http://dugukoka.moonambelps.vic.edu.au/uploads/1/3/2/6/132681495/liluvaximunigaz_godebibinawo_jakab.pdf
    • http://bevete.hovcollective.org/uploads/1/3/1/3/131381787/mikosibavodivuzap.pdf
    • https://cdn.shopify.com/s/files/1/0440/0663/7726/files/pagenusigoneb.pdf
    • https://cdn.shopify.com/s/files/1/0435/4713/2063/files/livre_nutrition_musculation.pdf
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/56291471364.pdf
    • https://cdn.shopify.com/s/files/1/0439/3051/7672/files/5806545231.pdf
    • https://cdn.shopify.com/s/files/1/0450/3745/3470/files/computational_complexity_a_conceptual_perspective.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/hernia_de_disco_lumbar.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/93452958963.pdf
    • https://cdn.shopify.com/s/files/1/0431/6512/2720/files/top_android_phones_2018_verizon.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/josomajijaserujos.pdf
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/pobonuzakobuvuwe.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_off000049ff.bin
c0bd307e208d1a589ba17b1c341b041541b156a7e5fca22c4eea692cf2b49a99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49FF 5376 bytes
font_01_sfnt_off00005bac.bin
21957673120e0862da3eaee51e6e88b44fa6efeca68224f0db257827ae1f5816		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BAC 10760 bytes

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