Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed23fe6ea86fd1eb…

MALICIOUS

PDF

71.8 KB Created: 2021-03-22 06:22:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1639676c5b16d7c6559229f5e30494d5 SHA-1: 52d77c64fd1a383ad66fe110d28f8f2158f16ada SHA-256: ed23fe6ea86fd1ebe54503f0880c1e2bb7f890f2d4c8ce17aa4ed4730c78ae60
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/123?utm_term=shankar+ji+ke+bhajan++video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450898/normal_5fd71b60d3c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460063/normal_5fd887b0e308c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470981/normal_5fd0e4d475e2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393883/normal_5fcb50ea8d47e.pdfIn PDF document text
    • http://idealica-columbia.site/brinkmann_grill_charcoal_smokero2un8.pdfIn PDF document text
    • https://cdn.sqhk.co/zitajazasu/icghbjj/72616684993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474471/normal_60370808ceb0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379237/normal_604b78aa24422.pdfIn PDF document text
    • http://apsmall.space/xakafajebedegesupobetozoxb9ftl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454820/normal_601bf96a74602.pdfIn PDF document text
    • http://mjawebdesign.net/12465710371t3mtt.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/hbhjjjZ/27519776148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448992/normal_604205ed31f58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388413/normal_6054b2e3bee1f.pdfIn PDF document text
    • https://cdn.sqhk.co/joxutedunik/jfbq77i/54534013599.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/vevatepobi.pdfIn PDF document text
    • http://hookup668.site/earthship_plans_freebxbgc.pdfIn PDF document text
    • http://vizexibidoxi.getenjoyment.net/geometric_mean_worksheet_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/finulepaf/gbCGOha/65156291494.pdfIn PDF document text
    • https://cdn.sqhk.co/xurakipigub/Khhkhic/zujejiru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dalelotagu.rf.gd/46697947468.pdfIn PDF document text
    • http://jubogaju.atwebpages.com/endangered_species_worksheets.pdfIn PDF document text
    • http://zimeketoxera.epizy.com/new_inventions_in_information_technology_2018.pdfIn PDF document text
    • http://roveramo.atwebpages.com/bawajufut.pdfIn PDF document text
    • http://ferodibev.onlinewebshop.net/cracking_the_dream_code_book.pdfIn PDF document text
    • http://didazejitikav.rf.gd/34147255593.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1C 4852 bytes
SHA-256: c3b1ae343997854414b7b78b571de1d00a445455871e113e847f7c2a4137bd6c
font_01_sfnt_off0000df7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7F 10020 bytes
SHA-256: ff13e53a07bad05eafaa8941909a059413886d16d7322d2e69d957b53c252a11
font_02_sfnt_off000101dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DC 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.