Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d340ebe15e5526e…

MALICIOUS

PDF

66.6 KB Created: 2021-02-12 00:05:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: dc365b42dfcebbfe62324e13651b4051 SHA-1: 8b404f983d6827353a5b28e7fcb147a2151d5111 SHA-256: 4d340ebe15e5526e379c0c814564a1464b3563b52a491be4d9f517223a5f90b5
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/wix?keyword=geometry+resources+by+chapter+10.1+answers In PDF document text
    • http://rikeropovi.22web.org/vertex_form_equation_of_a_parabola_calculator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392666/normal_5fe2e799bbef8.pdfIn PDF document text
    • http://wuvarijawogog.iblogger.org/eia_storage_report_schedule.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366351/normal_5fc8456baed97.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412897/normal_5ffd4544e9e29.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/Vjchihe/rugby_league_20_mobile_game.pdfIn PDF document text
    • https://cdn.sqhk.co/jazepoxamib/JqWgfgc/fetupezojugoduj.pdfIn PDF document text
    • http://remontnatali.ru/zoxuwukogonemavemanuf2a8dp.pdfIn PDF document text
    • http://itabody.space/badamojjoz.pdfIn PDF document text
    • http://metazoaapc.fun/tus_zonas_errneas_de_wayne_dyer9pl84.pdfIn PDF document text
    • http://gratoraama.website/geotours_worksheet_f_answersagxod.pdfIn PDF document text
    • http://busibear.com/oak_leaf_template_free_printablek9pd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://genobobef.rf.gd/eastlink_tv_channel_guide.pdfIn PDF document text
    • http://kiwusumusi.rf.gd/artex_elt_110-_4_installation_manual.pdfIn PDF document text
    • http://lasiliroba.epizy.com/zalupek.pdfIn PDF document text
    • http://fatebem.epizy.com/vufipere.pdfIn PDF document text
    • http://mudozegiviw.epizy.com/75473408123.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_off0000c542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC542 5732 bytes
SHA-256: b4e0d454da96f74c619aca470f63b4ce7bf69f87e68f9bb5a9b97176fa1115a5
font_01_sfnt_off0000d8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BE 10752 bytes
SHA-256: 632357c4443ea407dcd0c125de9d1be5566b99fa1a76048a1d5a9b0b1d104fb7