Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5594485ccbabd6…

MALICIOUS

PDF

72.9 KB Created: 2021-02-19 15:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 7313477a6466a1e4274bf53046bf9925 SHA-1: 488fed64d37cf3f284a61096a6f895dbc72cff6e SHA-256: be5594485ccbabd6c1dc501a3180c1fd87ed24cae8fe297d522443cd24885c59
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jacksth.ru/wix?keyword=navy+seal+sniper+manual PDF link annotation
    • http://shoop-fg.ru/what_is_the_best_mini_fridgen9qyh.pdfIn PDF document text
    • https://risixugetiso.weebly.com/uploads/1/3/5/3/135317557/8487142.pdfIn PDF document text
    • http://dasiroxejipi.22web.org/lupawizirak.pdfIn PDF document text
    • http://gosologesegob.iblogger.org/kadidavugusasojoga.pdfIn PDF document text
    • https://xapotitiguwux.weebly.com/uploads/1/3/4/6/134668809/c07fb80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416321/normal_5ff51542d726a.pdfIn PDF document text
    • http://rewita.fun/ielts_writing_sample_sheet_task_1eomi4.pdfIn PDF document text
    • https://regisaralox.weebly.com/uploads/1/3/2/6/132681556/vajuwebexibe.pdfIn PDF document text
    • http://item-get.top/head_first_php_and_mysql9yb31.pdfIn PDF document text
    • http://carinsusa.com/tavaleboxutipozxym3t.pdfIn PDF document text
    • https://puxetesotomu.weebly.com/uploads/1/3/0/7/130739839/famotemi.pdfIn PDF document text
    • https://jokilexagazoxo.weebly.com/uploads/1/3/4/6/134602179/f2a9edd905.pdfIn PDF document text
    • http://kewisanoxiv.66ghz.com/hillsborough_county_schools_report_card_schedule_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393036/normal_60208c0e23238.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457862/normal_6002fb2ddaf2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/tufokoloveruwopojig.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/17152754130.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/31833839421.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/56191620355.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_off0000e129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE129 5096 bytes
SHA-256: 15551878ee645eedd0ef869c4cca6d4de30b4e1d7d29b9502d6e54d7dde16064
font_01_sfnt_off0000f27b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27B 10608 bytes
SHA-256: c73c44a353def3d73853de18e6e08408d3404f145680453543454355387756c3