Malicious PDF — malware analysis report

Static analysis result for SHA-256 3276df90dcd358ca…

MALICIOUS

PDF

56.3 KB Created: 2020-08-10 13:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a62a80457e7c153b223bf437256cbdea SHA-1: 19111a9335c8ab5007b5f3b05bee0fae99066cf2 SHA-256: 3276df90dcd358caabfa12366dd71a70567d8a3ec3054d3e915c5a8008c03503
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious link, 'https://ttraff.cc/pify?keyword=instrumental+techniques+for+analytical+chemistry+pdf', is designed to redirect users to potentially harmful content. The presence of a link farm and a malicious redirector strongly suggests a social engineering attack aimed at driving traffic to malicious infrastructure.

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.cc/pify?keyword=instrumental+techniques+for+analytical+chemistry+pdf
    • http://files.peacenaperville.com/uploads/1/3/1/0/131070459/fagizir_pinobato_tudap_bomesujifav.pdf
    • http://files.nick-wright.com/uploads/1/3/1/8/131856860/sozikiwovud.pdf
    • http://files.ftfundraising.com/uploads/1/3/1/4/131453432/rolopidatajife.pdf
    • http://mukeli.gloucestershiregatewaytrust.org.uk/uploads/1/3/0/8/130814297/fokimimajopame_vuwakezasojosen_rulet_fadeloxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/nuzerirodeligaziluzev.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/tb_meningitis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/313851237.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/zazilu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/pdf_to_word_converter_online_from_adobe_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/59195860689.pdf
    • https://cdn.shopify.com/s/files/1/0432/6794/8706/files/how_to_highlight_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/dvs._dps._mn._gov_renew_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0430/9037/8903/files/mulasifetakiw.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/sovomosetupaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/5894/4405/files/zoxunakatixisode.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/wigulasifofuroxumor.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/german_dative_prepositions_exercises.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_off00009ad8.bin
e0471c57cd0cdcfe36329bbf91484f7a3bfcdf440e8cc3b16b4390aa8df3c4d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD8 5560 bytes
font_01_sfnt_off0000ad8f.bin
c10fa46b182b52540b43dc3dfb39c3a97d86f0c555d705479dcc341b97e0e01f
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD8F 11376 bytes