Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30784f355ab380a…

MALICIOUS

PDF

82.2 KB Created: 2021-04-03 03:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 758bc20d90ba60026ab425436eb401cf SHA-1: 09e584278fdf2c0cfab54481e809a70b33fb979f SHA-256: e30784f355ab380a5bb25bb5e080ace12f58186d24d50fb5130c533bddb27f3e
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to suspicious or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, potentially leveraging JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/wix?keyword=red+card+game+rules PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451766/normal_603bbcf0c8b59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_6011b884b7d98.pdfIn PDF document text
    • http://helpverifedbadges.com/informatica_bdm_10._2_admin_guide1n41c.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/jjidjge/clash_of_clans_bases_th9.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/jqh9ggs/mafanevomujovapavob.pdfIn PDF document text
    • http://silewugebed.scienceontheweb.net/weight_watchers_points_list_2020.pdfIn PDF document text
    • http://uber-global.com/business_analytics_jobs_entry_levelmzayo.pdfIn PDF document text
    • http://birapemotafew.mygamesonline.org/gaguwopepaviwuro.pdfIn PDF document text
    • http://afracheat6.xyz/msi_z97_pc_mate_nvme_support6ktyu.pdfIn PDF document text
    • http://barberking.best/waralulipogiga5pho3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373776/normal_605252eb217cb.pdfIn PDF document text
    • http://sexesex.site/burger_king_menu_whopper_caloriest61xk.pdfIn PDF document text
    • http://baby-slings.ru/singapore_kangaroo_math_past_papersm1avd.pdfIn PDF document text
    • https://zudabipepapob.weebly.com/uploads/1/3/4/6/134672750/c636b79657dc.pdfIn PDF document text
    • http://mscredit.info/wagner-modified_houts_questionnaire_online89iwb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372377/normal_5ff450b3bcd57.pdfIn PDF document text
    • http://chambrehq.xyz/linear_guideways_hs_code132pe.pdfIn PDF document text
    • http://kmikaerfs.ru/kaferexivareto09473.pdfIn PDF document text
    • http://esportzmlevent.com/what_happens_to_pecola_in_the_bluest_eyei9t8n.pdfIn PDF document text
    • https://cdn.sqhk.co/wasuxuletiz/jgeB1Xh/zunaxiwebamorisofaxep.pdfIn PDF document text
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/885bf216c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vivetusukuv.onlinewebshop.net/marawibi.pdfIn PDF document text
    • http://nixomirorubu.myartsonline.com/fozivedazine.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_off0001043f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043F 5268 bytes
SHA-256: ad6463f536e06be37fb24209d3db5de7aaf7f5b6c2b4cc577fa1d67a29f3b238
font_01_sfnt_off00011613.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11613 10580 bytes
SHA-256: 61f92c06f6995f87e7560a64a088bc880d7ec207cbe2cbd054e38f7e59c18b7f

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