Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c6f37adcf3d6f8c…

MALICIOUS

PDF

69.2 KB Created: 2021-02-26 11:48:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3624be2476a753a698ab789397ae4710 SHA-1: f47add3d6ce5546bbdd4caadf17c99d58a060127 SHA-256: 1c6f37adcf3d6f8c8b4b1935bd7d6fd00407ac27b4ee8d6c2c6a73d8ecaebe44
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://crophysi.ru/wix?keyword=2009+volkswagen+tiguan+owners+manual In PDF document text
    • http://lunowizu.iblogger.org/vepavubidaxojupexumipik.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/pikefemifunevibujifati.pdfIn PDF document text
    • http://wonujabazuvopa.22web.org/60658291315.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/new_yorker_student_subscription_tote.pdfIn PDF document text
    • http://lovawadawawo.iblogger.org/bacterial_cell_wall_microbiology.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/east_of_eden_john_steinbeck.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josetevuj.epizy.com/performance_parts_for_bmw_e36.pdfIn PDF document text
    • http://bavizajo.epizy.com/responsibility_assignment_matrix_template_word.pdfIn PDF document text
    • http://fofifalog.rf.gd/casio_g_shock_10_year_battery_watches.pdfIn PDF document text
    • http://fopogovokikav.rf.gd/how_to_calculate_an_interior_angle_of_polygon.pdfIn PDF document text
    • http://mibobugaf.rf.gd/hybris_cms_template.pdfIn PDF document text
    • http://funasuruwet.epizy.com/78298443648.pdfIn PDF document text
    • http://vosowetawevu.epizy.com/root_explorer_windows_android.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/jabra_freeway_firmware_update.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/87297051200.pdfIn PDF document text
    • http://vikoxip.rf.gd/antes_de_partir_livro.pdfIn PDF document text
    • http://riramemixezu.epizy.com/70217804155.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/gojim.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_off0000d254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD254 5556 bytes
SHA-256: 7e9fa6d9c488d2db3a7ba8929e126251bee73f62bddb43765c4ae891cb3c75b5
font_01_sfnt_off0000e53a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53A 10164 bytes
SHA-256: 716e428ca3d4788d13ac4e6789478f2978e39ff8968b436723774d1c5a96869c