Malicious PDF — malware analysis report

Static analysis result for SHA-256 5805e6a3be67005c…

MALICIOUS

PDF

66.8 KB Created: 2021-02-10 18:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7a7d5097dc25330632dab16ab2173dbc SHA-1: d3dc0e4add54f263b5d4346cdf869f9c00d903c1 SHA-256: 5805e6a3be67005caaa6e2340a3b780452823813df78a5a9c7791878be62bab9
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/wb?keyword=arhar%20dal%20information%20in%20english In PDF document text
    • http://manekobe.22web.org/sun_movie_free.pdfIn PDF document text
    • http://dulexip.22web.org/contract_template_consulting_services.pdfIn PDF document text
    • http://jixuvofariva.iblogger.org/salary_expectations_answer_examples_uk.pdfIn PDF document text
    • https://retariluwefise.weebly.com/uploads/1/3/4/8/134858211/tawitejilotig.pdfIn PDF document text
    • https://bowemubunewoseg.weebly.com/uploads/1/3/0/7/130739536/kaferu_kofekuwat_kiboz_towapofoxuz.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/gipazufufuj.pdfIn PDF document text
    • https://jevixivuxed.weebly.com/uploads/1/3/4/6/134622771/kupofodugugiwubitun.pdfIn PDF document text
    • http://jopkapopka.online/pefudofu1gm79.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ximedamolaxeve.epizy.com/16820444743.pdfIn PDF document text
    • http://buxozowiliva.rf.gd/pupemosawutifajajusu.pdfIn PDF document text
    • http://repuvamiperubo.epizy.com/fractional_crystallization_lab_report_conclusion.pdfIn PDF document text
    • http://mamitepibo.epizy.com/adithya_varma_movie_trailer.pdfIn PDF document text
    • http://jidoreno.epizy.com/fofuxaximagigipaworo.pdfIn PDF document text
    • http://sobogasitizi.epizy.com/labufikiwariduzos.pdfIn PDF document text
    • http://fozoxorosemaxo.epizy.com/kahoot_correct_answer_bot.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_off0000ca2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2B 5308 bytes
SHA-256: c4abf7978a50659f679a937bc9381c6204c76dddf2b8a959876c9102639e4bef
font_01_sfnt_off0000dc11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC11 10080 bytes
SHA-256: 354409668f75ae6cc346922b2ce531416bd8fc5ab864e64b3a283cbd01193ac8