Malicious PDF — malware analysis report

Static analysis result for SHA-256 34474d6bd59f224b…

MALICIOUS

PDF

65.4 KB Created: 2021-02-17 21:58:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 84ee8654bf03fc7b6bc5bcc60986485e SHA-1: 8534143372311045fa8f0901215b4838c2ac4211 SHA-256: 34474d6bd59f224b22ec351f42890fb51e7a837b65b08e623aed450e6c1d048a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=algebra+1+summer+packet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383470/normal_6017ca6ccc12b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5fc6bb18a80cc.pdfIn PDF document text
    • https://wovikuzejujitij.weebly.com/uploads/1/3/4/5/134506660/7728827.pdfIn PDF document text
    • https://cdn.sqhk.co/sakiforivona/ELheACj/hello_neighbor_walkthrough_act_3_wrench.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374537/normal_602378d2be56f.pdfIn PDF document text
    • https://navenote.weebly.com/uploads/1/3/5/3/135314710/wiweriremu_zidojin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_5fe5a3e0ace8f.pdfIn PDF document text
    • https://cdn.sqhk.co/nadudegimew/aehfgee/internet_marketing_business_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406454/normal_5ffd9ac5c6444.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485442/normal_5fc7d3a195bc5.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/mgjz1rX/what_time_is_your_lunch_break_in_spanish.pdfIn PDF document text
    • https://numetoximo.weebly.com/uploads/1/3/4/7/134717633/puwudat_jedija_vebimir_posarovivawituj.pdfIn PDF document text
    • https://dunipilulu.weebly.com/uploads/1/3/4/8/134880259/2348bd98c92f011.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488558/normal_5ff6946c47c8e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388835/normal_5fc7c42617583.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415537/normal_5fe730ab64819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451566/normal_60270020c0358.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371005/normal_5fe2d3165ae02.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/zjcicvZ/kofevupudubemejufigejanoj.pdfIn PDF document text
    • https://tewawabuse.weebly.com/uploads/1/3/1/4/131437503/9025392.pdfIn PDF document text
    • https://taferirufip.weebly.com/uploads/1/3/4/5/134582969/9475895.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC375 5592 bytes
SHA-256: 9f065e779b09330f9e8ce39451d4cceb6d025278897c76e94121b5786d463842
font_01_sfnt_off0000d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD689 9900 bytes
SHA-256: db3e0a90ba1e3ccd9aaee245c4712ed5bf0bb296335c0456ec2f394bd3d1b17d

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