Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac0523a9ee6bb37…

MALICIOUS

PDF

78.4 KB Created: 2021-02-17 19:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f9982385fce84a569a46259013619c98 SHA-1: 534628d5cc9dd711f1d53d2d0da050f16466a3ff SHA-256: eac0523a9ee6bb371497f457c9657e7126fe23902d78a8939a4f48a70e826d36
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=ejemplo%20de%20minuta%20de%20constitucion%20de%20empresa%20sac In PDF document text
    • http://obzorov.site/rigiwiwolupanikaxija8agod.pdfIn PDF document text
    • http://mangalvpodarok.ru/yellowstone_national_park_camping_rulestiyez.pdfIn PDF document text
    • http://hotita.space/kingsport_times_news_e_edition_olive9ly4c.pdfIn PDF document text
    • http://hookup158.fun/30498715265kbs5n.pdfIn PDF document text
    • https://cdn.sqhk.co/pitadewedobu/q84hgii/sand_balls_puzzle_france_level_19.pdfIn PDF document text
    • http://vulgargirls.fun/counter_strike_condition_zero_maps_freery4uf.pdfIn PDF document text
    • http://thiswaytovogue.com/real_drift_car_racing_game_download_apksywpv.pdfIn PDF document text
    • http://zhigina.ru/disney_coloring_world_hackgcpqu.pdfIn PDF document text
    • http://lorenbayi.com/wanaxkbrd9.pdfIn PDF document text
    • http://shoop-fe.ru/oral_b_5000_toothbrush_reviewa8rso.pdfIn PDF document text
    • http://storezone.info/buku_agama_agama_dunia82ib0.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/lonozote/zitowuviduzofujujaxizedaz.pdfIn PDF document text
    • http://mimarenunev.rf.gd/muxipilibemakosir.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/date_format_react_native.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/family_tree_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/psychedelica_of_the_black_butterfly_route_guide.pdfIn PDF document text
    • http://potubavaziripek.epizy.com/writing_paper_template_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/rubik_s_cube_solve_guide.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_off0000f404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF404 5252 bytes
SHA-256: fe8845f270ad35581ce89064c6ac5f0414facf820b2ac8b94850ec5349236cd1
font_01_sfnt_off000105c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C9 11316 bytes
SHA-256: f165bbaa20ea623c2b40c1e4489c4c060f3a37d22af5e1a8dfe57fc00c999885