Malicious PDF — malware analysis report

Static analysis result for SHA-256 334d8fd4d980ca12…

MALICIOUS

PDF

105.0 KB Created: 2021-03-29 10:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 09d45be54d5618b29d5ce957893af305 SHA-1: c211c3d5559cafcfb099eab97b72512d77afe812 SHA-256: 334d8fd4d980ca122e3b8d72efa096a3bd9a8a4210406d29ebaf39505d207e72
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable hosting or redirectors, suggesting an attempt to direct users to malicious sites. The presence of 'utm_term=what+is+blind+patriotism+mean' in one URL indicates a potential social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/strik?utm_term=what+is+blind+patriotism+mean PDF link annotation
    • https://cdn.sqhk.co/wimiwupo/jfEggn6/dikiruwun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_601ff68da6624.pdfIn PDF document text
    • http://businesslinecenter.com/litubimezidolitibk48c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502188/normal_6011e719366a3.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxowilag/bhbjcaI/10489292237.pdfIn PDF document text
    • http://greenbike.shop/80353822296ujuke.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofodatop/L1jfdje/88844010886.pdfIn PDF document text
    • https://cdn.sqhk.co/jejefudebuxi/j8hbKsh/zoo_animals_coloring_pages_for_preschoolers.pdfIn PDF document text
    • https://cdn.sqhk.co/gipudeviwapi/g4777jc/sabiv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408713/normal_601b1f2818e2c.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/fxfIiao/draw_n_guess_multiplayer_ios.pdfIn PDF document text
    • http://lenugaguv.medianewsonline.com/the_book_of_angel_raziel_in_english.pdfIn PDF document text
    • https://cdn.sqhk.co/riketumes/cAhgjaf/mipeveleb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407303/normal_601456e35bade.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuneduzib/ih8Yia4/avision_button_manager_free.pdfIn PDF document text
    • http://businesshelpservice.com/subordinate_conjunctions_list_ks2odou4.pdfIn PDF document text
    • https://cdn.sqhk.co/gugapedulob/iiUDkhy/new_among_us_guidelines.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wexukufedepim/pirate_ship_sheet_cake.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/blogs_de_libros_juveniles_para_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/test_de_inteligencia_emocional_gratis_para_imprimir.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/89099992737.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/teradata_timestamp_with_timezone_format.pdfIn PDF document text
    • http://xefiposokupama.myartsonline.com/fejowavajomajajek.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F66 5140 bytes
SHA-256: 669eb40780d87b267f55f12c9be488149d8cfb73a80e5f04aaad527f0785f5b0
font_01_sfnt_off000160a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x160A3 11664 bytes
SHA-256: 5a01bd44401a01ff782bbb2e7df08793b4471b53f3f6b6739b97e5b76b6d96bd
font_02_sfnt_off00018865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18865 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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