Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f9c6b11194741c…

MALICIOUS

PDF

112.0 KB Created: 2021-03-10 08:22:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5296c71d686dd9bdcabcb1231105f95 SHA-1: 637fb6902528faba4298034200b9e7ac8694efa7 SHA-256: 05f9c6b11194741c837918f29d1f1bf5d75f809ec9208676b7dcddeb39d9c121
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to Weebly and CDN domains, suggesting a link farm or redirection mechanism for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and extensive URL list are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://kuzutuzo.ru/aws?utm_term=solutionreach+notify+login
    • https://nuwosalu.weebly.com/uploads/1/3/4/4/134497214/bavojuwek-fadulitufis.pdf
    • https://cdn.sqhk.co/dubutemaruxu/jbhhjii/67974191965.pdf
    • https://cdn.sqhk.co/tamurikubol/htMGSje/american_football_league_teams_2018.pdf
    • https://cdn.sqhk.co/votojuxosaf/jmghXpy/63321365446.pdf
    • https://cdn.sqhk.co/duravukikemo/hcXOgis/99304718229.pdf
    • https://sipovabamekejo.weebly.com/uploads/1/3/5/3/135391609/1682359.pdf
    • http://keepmaxi.space/wadegerukpd61a.pdf
    • http://kalidejomepajo.scienceontheweb.net/39486462197.pdf
    • http://fullhp.info/space_rangers_earth_37rc2um.pdf
    • http://dektesheff.xyz/house_of_usher_movie_cast6suz1.pdf
    • http://hookup666.site/99417670767e7fma.pdf
    • http://avtoshkola-region26.ru/75010958393owp22.pdf
    • http://helpcenterbusiness.xyz/desh_bhakti_all_ringtone_free5d3ho.pdf
    • https://gavuzolarot.weebly.com/uploads/1/3/4/4/134458525/5295499.pdf
    • http://afracheat8.xyz/jewejugoxusezakolyncx.pdf
    • https://cdn.sqhk.co/zanudiwageg/Nlvif0m/daduwanadasulexedidobid.pdf
    • http://tosefabebiribow.scienceontheweb.net/4_circle_venn_diagram_template_word_2007.pdf
    • http://tufodudem.mypressonline.com/18942180600.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kopolug.myartsonline.com/fabuduwabuzokefokokanarag.pdf
    • http://jemileti.atwebpages.com/gameshark_cheat_codes_pokemon_emerald.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017a2a.bin
6e55c36e5e6f7eec4ba03ba68ea6dd251e2463e5c32ed6a1ad90e4ddce439f2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17A2A 5172 bytes
font_01_sfnt_off00018bc7.bin
40cf78bcec142364a04d30d044664727dff9613bb0329fcff1f9760bff123fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18BC7 11588 bytes

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