Malicious PDF — malware analysis report

Static analysis result for SHA-256 2996edb457f4be9d…

MALICIOUS

PDF

75.1 KB Created: 2021-03-04 17:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 54c2070fc266bb4fe450d651cb39bb3e SHA-1: dac28d4ee88305530073e18d997f18a02c47067e SHA-256: 2996edb457f4be9d1673790002449749d918ff8d3752f30b703a20cc927a012c
126 Risk Score

Malware Insights

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

The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The primary malicious URL identified is https://lozipotod.ru/strik, which is likely used to redirect the user to a malicious site or download a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=comentario+de+texto+bodas+de+sangre+acto+1 PDF link annotation
    • http://zavemobavozake.22web.org/hospitality_management_internship_report_sample.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/44258924584.pdfIn PDF document text
    • http://mobevusujezuno.22web.org/8047589498.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/70cc0.pdfIn PDF document text
    • http://pawedipavixet.22web.org/pozizonirobu.pdfIn PDF document text
    • http://xuxetosufuzo.getenjoyment.net/70098793903.pdfIn PDF document text
    • https://pipamoximiketo.weebly.com/uploads/1/3/0/9/130969724/gedefimixo.pdfIn PDF document text
    • https://jejipabiximi.weebly.com/uploads/1/3/2/7/132741556/suzasafozilukob.pdfIn PDF document text
    • https://komijeji.weebly.com/uploads/1/3/1/6/131606126/13eb2af08e2b.pdfIn PDF document text
    • https://vemenujobife.weebly.com/uploads/1/3/5/3/135399872/2164424.pdfIn PDF document text
    • https://dovavifedudefew.weebly.com/uploads/1/3/2/7/132710721/73bbb7725761.pdfIn PDF document text
    • http://xovijezup.mywebcommunity.org/56464384069.pdfIn PDF document text
    • http://nebemor.mywebcommunity.org/dna_structure_coloring_worksheet_answers.pdfIn PDF document text
    • https://kotutoxegaru.weebly.com/uploads/1/3/2/6/132695780/2139835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kibesana.epizy.com/thank_you_mam_by_langston_hughes_in_spanish.pdfIn PDF document text
    • http://buzanuziti.myartsonline.com/panasonic_kx-t7633_telephone_user_manual.pdfIn PDF document text
    • http://dexixikix.epizy.com/a_serious_man_parents_guide.pdfIn PDF document text
    • http://tedejokalegiruj.epizy.com/72363068448.pdfIn PDF document text
    • http://bopegudopagoz.rf.gd/49015758187.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/dragon_age_origins_mods_pc_free_download.pdfIn PDF document text
    • http://tovivefi.rf.gd/hp_mercury_test_director.pdfIn PDF document text
    • http://fegoluvarelewum.myartsonline.com/mn_drivers_license_practice_test.pdfIn PDF document text
    • http://zimemotom.rf.gd/personal_development_plan_objectives_sample.pdfIn PDF document text
    • http://pokitudid.epizy.com/guidelines_for_management_of_acute_hemorrhagic_stroke.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_off0000e6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C4 5392 bytes
SHA-256: 93c81a8e1f5c2045ef0cbbcccf501aa7ab0566aa2a1bda597c2e8c1c46d7cd35
font_01_sfnt_off0000f906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF906 10952 bytes
SHA-256: eb829fe555a29d4ebd6580d988a8ee594ab782b869722885ec474d58136d20a3

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