Malicious PDF — malware analysis report

Static analysis result for SHA-256 2031eccf96ea972b…

MALICIOUS

PDF

72.5 KB Created: 2021-02-05 02:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 89696c4bbac396dd95321861f6386e41 SHA-1: b88ce01e669400434860173aa813d13d4306ca6b SHA-256: 2031eccf96ea972b8d6ceb8e997e6b5ca9fd38d9d28c9f15ea7cda767be2b5db
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/wb?keyword=listening%20answers%20of%20sports%20super%20centre In PDF document text
    • http://zozuwax.66ghz.com/defense_travel_system_hotel_tax_exempt_form.pdfIn PDF document text
    • http://sell-toclick.online/88256076804qu71d.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/iaQaiid/diy_ideas_for_old_dressers.pdfIn PDF document text
    • https://cdn.sqhk.co/wubumeze/gjShjhe/40617809413.pdfIn PDF document text
    • http://veranezos.iblogger.org/65881207340.pdfIn PDF document text
    • http://1xbets-regs.site/free_water_parks_in_west_palm_beachszpvx.pdfIn PDF document text
    • https://kobizixudowizeb.weebly.com/uploads/1/3/4/4/134402546/raxulegulawamarapu.pdfIn PDF document text
    • http://adyga.site/binexado8f11g.pdfIn PDF document text
    • http://argo-tourism.com/rizuwemidatam3w.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/Hggggge/18580862149.pdfIn PDF document text
    • http://lidzadva.xyz/77063393243sjezo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xutulatovemi.epizy.com/dudujuzavilurujewozamudu.pdfIn PDF document text
    • http://xosofidevutora.epizy.com/endgame_4k_free.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/pupokarisama.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/tropical_fish_species_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_off0000dcbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBB 5184 bytes
SHA-256: f9ba1fc0f4bbb887de6b65dd55da7bf4b3c17a4f7f8fa3d8128cde72d3c67197
font_01_sfnt_off0000ee8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8A 11364 bytes
SHA-256: c05250075d08ed61c24612eb186e9478860f08cc2482d6b214f2de83024813bc