Malicious PDF — malware analysis report

Static analysis result for SHA-256 e026b0bdaf956cf9…

MALICIOUS

PDF

85.7 KB Created: 2021-02-26 17:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 08adfcff95e7b2d0f7fcc49ea3caed5b SHA-1: 5b0d7bf6c47c29bc88678ed5b7ccb9fa6a7164ae SHA-256: e026b0bdaf956cf9449eb3c48ad2eef1bbe75a73a6541574f982abcb0c5123de
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/award?keyword=positive+psychology+and+recovery+movement In PDF document text
    • https://rubexanow.weebly.com/uploads/1/3/5/3/135346757/kivevosisa_pawukezizuf.pdfIn PDF document text
    • https://xipejefokodidub.weebly.com/uploads/1/3/4/6/134612454/c96b199c738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471683/normal_601198a307da6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499995/normal_5fd921cb26736.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/how_to_replace_a_whirlpool_dryer_idler_pulley.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/16613561322.pdfIn PDF document text
    • http://wugupomovupa.sportsontheweb.net/how_to_write_an_essay_for_high_school_application.pdfIn PDF document text
    • https://boxesagako.weebly.com/uploads/1/3/4/5/134589877/87b33ff0c8f1.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/59465513260.pdfIn PDF document text
    • https://texexavif.weebly.com/uploads/1/3/1/4/131454683/jovixifoxoxamem.pdfIn PDF document text
    • https://lutaxabivuk.weebly.com/uploads/1/3/0/7/130740512/6469921.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/icMgfDz/hmrc_vat_rates_monthly.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/what_is_included_in_dodge_durango_tow_package.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/logitech_mk710_review_cnet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feferabi.atwebpages.com/how_many_books_are_in_the_house_of_night_series_in_order.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_off000113df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113DF 5652 bytes
SHA-256: 5bae8795fd00d5d032dd37fa69b5b29ed6a865360fa507d642b94a20464d704c
font_01_sfnt_off000126fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126FB 10184 bytes
SHA-256: f29c79a688b7f33fe25a4f75c55d86e3274572baab859f35c67cc2279c9214fd