Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e95f27d6f48415a…

MALICIOUS

PDF

80.2 KB Created: 2021-02-26 13:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 6d32cc5dd21edaeb24e9df05117014a3 SHA-1: e8322ca3c51f2b81f7593a346d944a6d2286858e SHA-256: 2e95f27d6f48415a9928c993d49964b492c78ce5a0002ce2178e3c78ea97d1da
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, many pointing to disposable hosting, and is identified as a link farm. The presence of embedded URLs and the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggest the document's primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/strik?utm_term=who+should+i+keep+fantasy+football+2020 PDF link annotation
    • https://cdn.sqhk.co/liripudeb/eZKigih/87473058327.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/what_is_literature_review_in_term_paper.pdfIn PDF document text
    • http://tatajosak.22web.org/reading_comprehension_worksheets_ks2_year_6_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379231/normal_5fca3fc788348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452206/normal_6029259d15be1.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/lebuzexememov.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/ZFgd6gc/91311623669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473445/normal_6038057524f0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409102/normal_60364920cb209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388598/normal_5fdbe12ca0a52.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/how_to_become_a_successful_real_estate_agent_in_florida.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/ggeuaib/93589394488.pdfIn PDF document text
    • http://femuxeririta.mygamesonline.org/jujebasifoxuxateki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418391/normal_6011ebfae2da0.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/21715559518.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/how_to_list_multiple_possessive_nouns.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461763/normal_5feb5e6e7f454.pdfIn PDF document text
    • http://fotubobuwenapu.scienceontheweb.net/loponu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487005/normal_602b298a98665.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mukanebesiva.atwebpages.com/critique_of_everyday_life.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/do_xbox_turtle_beaches_work_on_pc.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_off0000fbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE6 5628 bytes
SHA-256: e6dcfc1c4800ad0b040cc0082eb8e1f77ff4f35f1e77e9c0e3dfeee608a4897d
font_01_sfnt_off00010f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F19 10608 bytes
SHA-256: b48df3703594bdcdb26fb32fa0359a3f9b8e36acd8cd03eb02b65570bcaa85df

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