Malicious PDF — malware analysis report

Static analysis result for SHA-256 584420f61e0fdf69…

MALICIOUS

PDF

51.8 KB Created: 2020-10-09 22:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ba2eeedf72c41a286a13a5f42a775fdb SHA-1: 743621f816670e990dafe95c2c4c01cbbe04bea0 SHA-256: 584420f61e0fdf69ff62fd2a4b10b699a2dd90225db8a123d02814e7160b3b6a
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=interactions+among+living+things+enrich+answer+key In PDF document text
    • http://files.techedlearning.com/uploads/1/3/2/6/132682882/4625691.pdfIn PDF document text
    • http://files.izumiwellness.net/uploads/1/3/2/8/132814980/tuxigenepomikeki.pdfIn PDF document text
    • http://naxitesu.tabithapang.com/uploads/1/3/1/3/131379608/lonemera.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/91bf166a-ce05-4a40-b28b-c74dc73a39ed/vagigara.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5647c000-b8ef-4692-99c9-260f79721e8e/migumebegesotaponurefexit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e71d5cb0-f2cf-44ce-b6cf-a09f6669581e/temagelatineriku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f974605-dd5b-4069-8269-f6baaea9f6da/59038853627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4183/9514/files/duluvavuwuzuxofebizuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1424/8857/files/puzovizasim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6668/6629/files/99218957175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/5027/1388/files/wureludufibisamali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/god_provides_lyrics_by_tamela_mann.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/patrick_arnold_chemist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5022/0185/files/pevitijezibigixona.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_off00008ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB6 5468 bytes
SHA-256: 97fb049d4fd6c0c3f8de8aa8252b1fa1497cde4a7c0072e6f69608484401c481
font_01_sfnt_off00009d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D3A 10640 bytes
SHA-256: d8ca09de3da3e96f936805a2766ff10ae04c616e35cd2b7608fe1c950167e160

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