Malicious PDF — malware analysis report

Static analysis result for SHA-256 c934966a614b7f32…

MALICIOUS

PDF

71.8 KB Created: 2021-02-14 01:42:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f0576f4f2127588832f21cb136c2c275 SHA-1: de74f4f86da6ff5bf94ee81ec4dd932bc5d5b407 SHA-256: c934966a614b7f32caf15b55b20829c3a52e6aad048003cda8e562ae3cdabcfb
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=garena%20lol%20mobile In PDF document text
    • https://cdn.sqhk.co/moxinivo/ighbjbf/85383651579.pdfIn PDF document text
    • https://molavose.weebly.com/uploads/1/3/5/3/135350427/2506544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416929/normal_601baba95e549.pdfIn PDF document text
    • http://ragitikevuwa.22web.org/angular_abstract_component_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495042/normal_6002d5928e669.pdfIn PDF document text
    • https://panikelixiguju.weebly.com/uploads/1/3/4/4/134478359/bitabuteberu.pdfIn PDF document text
    • http://goodik.fun/how_to_make_esp_work_for_youvd39e.pdfIn PDF document text
    • https://cdn.sqhk.co/luwonowuwig/apgjhcX/rowamezozavizolib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407299/normal_6000be639514f.pdfIn PDF document text
    • https://pabidiwamudobav.weebly.com/uploads/1/3/5/2/135299897/beluvevekowoza_gijizi_vajafegufimiv.pdfIn PDF document text
    • http://idealica-itufficiale.website/barbie_dreamhouse_adventures_dolls_amazonl4y1c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/makixibawumebol/45007816015.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/todoted.pdfIn PDF document text
    • http://rebubokinore.epizy.com/difficult_maths_puzzles_and_riddles_with_answers.pdfIn PDF document text
    • http://torisesajew.rf.gd/blood_in_blood_out_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/night_figurative_language_worksheet_key_34-_45.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/english_guide_6th_class.pdfIn PDF document text
    • http://laxizal.epizy.com/comparing_horizontal_and_vertical_integration_worksheet_answers.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_off0000dc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7C 4824 bytes
SHA-256: d57ad8dea80da82413b6e4652b061593dc418677e3165d188d39193b38ef616c
font_01_sfnt_off0000eccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECCC 11196 bytes
SHA-256: 67e9ea9a85ddc80583585ad0759a5ce50ad8622c2f07b0fb9f4183c101c36a87

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