Malicious PDF — malware analysis report

Static analysis result for SHA-256 18057c8842b13db9…

MALICIOUS

PDF

77.0 KB Created: 2021-03-19 18:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 6701d38cd4ad7ae56282353c6a99a3d3 SHA-1: 710223522e6c6c76fe1aa78906b8af035faf00df SHA-256: 18057c8842b13db9e6e216a326d0a1f04b4c87bfefaebae998faa0604a68920f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit users by redirecting them to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/strik?utm_term=the+heiress+movie+youtube PDF link annotation
    • http://vertigoa.online/can_15_year_olds_work_at_chick_fil_au1trn.pdfIn PDF document text
    • http://betizekaxu.getenjoyment.net/regukolugosup.pdfIn PDF document text
    • http://zvezdasevera.online/falda_andina_sinonimoq1vvp.pdfIn PDF document text
    • http://taher-tcac.com/49112411755drg92.pdfIn PDF document text
    • http://lightly.store/xexejezuuz083.pdfIn PDF document text
    • http://yoga-italy.space/xinijugakelaf718mp.pdfIn PDF document text
    • http://hocostyle.ru/jazutu24cgj.pdfIn PDF document text
    • http://nat-yoga.space/fury_death_marvelax4lt.pdfIn PDF document text
    • http://winatesef.sportsontheweb.net/differential_calculus_by_shanti_narayan_and_mittal.pdfIn PDF document text
    • http://xarapover.mygamesonline.org/room_on_the_broom_picture_book.pdfIn PDF document text
    • http://xivoxuvawet.iblogger.org/vomebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/miledu/pimexagiwutapedubok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac9efc26-4ecb-494f-9d25-1eb9be63daa1/presto_food_dehydrator_06309_manual.pdfIn PDF document text
    • http://tefuwileb.rf.gd/pavamafe.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/jamaica_anansi_stories.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/risperidone_1mg_tablets_patient_information_leaflet.pdfIn PDF document text
    • http://vizawenep.epizy.com/bobolipujom.pdfIn PDF document text
    • http://jopokodex.rf.gd/12373899288.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/89661138024.pdfIn PDF document text
    • http://riwexakax.epizy.com/86724001561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/487baf24-0015-46d1-a01c-98bf853fe490/how_to_check_samsung_tv_model_using_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/xitetegozereza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99b8a484-933d-44a4-9299-471691e06531/the_decameron_1971_full_movie.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_off0000f274.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF274 4932 bytes
SHA-256: 7c8a222e1caefbf8854b21fee9d195c85434ee94697ee3c241cf19fb6064ebd8
font_01_sfnt_off0001031e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031E 10552 bytes
SHA-256: a1dba81e7e20a87cf817b49c974c179701a985bbf1864a8aa3e05320ed411b07

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