Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c4694a48c4b7ab…

MALICIOUS

PDF

51.4 KB Created: 2020-10-05 02:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b35523e654cccee332a9f9472221c197 SHA-1: f7d4a6ff2fa79ffaf4908b9c81e87036f5e00d84 SHA-256: 95c4694a48c4b7ab84a630a23720d367983589f84547b1fe3683fdc5f781edfa
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=uniform+circular+motion+simulation+answers In PDF document text
    • http://movozu.faithbaptistalturas.org/uploads/1/3/1/3/131380600/xukela.pdfIn PDF document text
    • http://files.upstatecluttercoach.com/uploads/1/3/0/7/130739081/titajajagu_sesizip_tegijexelesule_vawuwi.pdfIn PDF document text
    • http://nutegif.islandstatusboutique.com/uploads/1/3/0/8/130814328/balufopabusi.pdfIn PDF document text
    • http://mekosux.grayfieldslat.com/uploads/1/3/2/7/132740373/xutes.pdfIn PDF document text
    • http://files.campbelldenver.org/uploads/1/3/1/1/131163533/ledutuzoxuk.pdfIn PDF document text
    • https://site-1041289.mozfiles.com/files/1041289/59979461900.pdfIn PDF document text
    • https://site-1037193.mozfiles.com/files/1037193/bivawafozidi.pdfIn PDF document text
    • https://site-1041091.mozfiles.com/files/1041091/94344856953.pdfIn PDF document text
    • https://site-1036779.mozfiles.com/files/1036779/1769804042.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/peguzelovaridinedanitejug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5304/7195/files/buwawup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/divinity_original_sin_enhanced_edition_character_builds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/50601818675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0647/5426/files/free_psn_code_list_no_survey_or_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3616/3747/files/16oz_can_in_ml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/mopunonitufefurijoxudat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8059/9702/files/fisabubixujubesemajud.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8664 5112 bytes
SHA-256: 7cfc7b9ea9f7eca74f2a029ee9aba2f938ab1c6a7a6e9a833b86ea5f59285f0b
font_01_sfnt_off000097c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97C2 12432 bytes
SHA-256: 50d553672a31390885b1609f0ea47180cc16e2764c6d5194babc9c28b3982e21

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