Malicious PDF — malware analysis report

Static analysis result for SHA-256 253ade172663b716…

MALICIOUS

PDF

45.8 KB Created: 2020-10-01 08:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d804c921d4731edb7a76390856f55f7d SHA-1: a7aab8a11533cca586eed840fa3c0259f5d3cd9b SHA-256: 253ade172663b7169db0e60f3b7e8443fa0bb5893e780312bf437063a96d5590
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://cctraff.ru/strik?keyword=anglican+hymns+pdf In PDF document text
    • http://wolix.henkpeetersarchive.info/uploads/1/3/1/4/131438860/109307.pdfIn PDF document text
    • http://files.smart-homesolutionsllc.com/uploads/1/3/1/0/131070912/1715730.pdfIn PDF document text
    • http://files.chicagocomics.com/uploads/1/3/0/7/130776763/2523516.pdfIn PDF document text
    • https://site-1037282.mozfiles.com/files/1037282/wafamomome.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/rimefafimopufag.pdfIn PDF document text
    • https://site-1037106.mozfiles.com/files/1037106/67641267661.pdfIn PDF document text
    • https://site-1040048.mozfiles.com/files/1040048/87796277587.pdfIn PDF document text
    • https://site-1036655.mozfiles.com/files/1036655/35863864056.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b24d6d-ac89-46e9-8175-8ff6784b5a68/jevovegov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb309fc2-808c-473b-9634-f1985016d87e/kopodanubusisolebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8938/6901/files/98391702076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9559/4910/files/wupagiduwupirivubegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5684/8282/files/55121916204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9027/8568/files/cardinal_and_ordinal_numbers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/jadujivuwovolu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000762b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762B 5564 bytes
SHA-256: 591d72dd31d7cf361de5e22ad0516a621a9f6b8e99e678750b38bce6d4369f09
font_01_sfnt_off0000890c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890C 9908 bytes
SHA-256: 7909340831423b290589f4888050b1598064034d373b95aec05e0a1e3730e7d3

Open this report in the interactive analyzer, or submit your own file for analysis.