Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6432d0cd702535…

MALICIOUS

PDF

69.0 KB Created: 2021-02-15 10:45:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3442f6745d97ae8581c846e6a2416391 SHA-1: aa77f4204bddf548e2db7f776bdd2e4c1a3dbe9c SHA-256: 6c6432d0cd702535c58da161d65c02fcad7a4a912281ff6e6deeea58692d16df
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=ford%204500%20backhoe%20transmission%20parts In PDF document text
    • http://gunodopo.22web.org/queen_bed_sheet_set_ikea.pdfIn PDF document text
    • http://itchia.space/how_to_hack_modern_strike_onlinevso40.pdfIn PDF document text
    • http://idealica-itufficiale.website/xaveva35rp.pdfIn PDF document text
    • http://covid-19online.site/30004179465hce2x.pdfIn PDF document text
    • http://temppicture.xyz/hunter_assassin_mod_apk_happymodxf2iz.pdfIn PDF document text
    • http://clubstore.info/camanche_fishing_report9j8ea.pdfIn PDF document text
    • http://tevfikyuce.xyz/287684894082mcex.pdfIn PDF document text
    • http://claire-irk.ru/purosolokugzn28.pdfIn PDF document text
    • http://fimewot.xyz/internship_report_marketing_strategy5u2g0.pdfIn PDF document text
    • http://helplnstagramoffice.com/el_silmarillion_epub_espaolnr59c.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/ezUndij/42680835531.pdfIn PDF document text
    • http://straponartist.com/mitudinevolizaxvuh8m.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sasatabarodozow.epizy.com/audio_naat_video.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/free_basic_invoice_template_excel.pdfIn PDF document text
    • http://lanuvurunipa.epizy.com/winavijasamijebemozi.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_off0000cf2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2D 5792 bytes
SHA-256: 0c66f96c416c23b18b622039ba8320d8adeb81f55d33620176ef5dbe0a2eb0e7
font_01_sfnt_off0000e2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C3 10748 bytes
SHA-256: 8c4518523d20054454bd04b5dcb8c9bbd46496398e2545fca555db1f2bce2532