Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dbf234bc8ad95ff…

MALICIOUS

PDF

81.7 KB Created: 2021-03-17 23:10:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 227e7512d86dc8455524d7475f4220ff SHA-1: 73d4ea21ff779a9f785dc88864108cc75f30c76e SHA-256: 1dbf234bc8ad95ff72ab9eced24bdb91d6c0c1a8ca919e8973b2468d4088aa27
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 suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of an external URI and the overall classification suggest the document is designed to redirect users to malicious content.

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://vilenefex.ru/strik?utm_term=how+to+write+a+food+review+ks2 PDF link annotation
    • http://suxoxaxowigab.scienceontheweb.net/what_is_a_certificate_of_creditable_coverage_letter.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/50681189798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461516/normal_60379f747a61c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421213/normal_600c4926ebcf9.pdfIn PDF document text
    • http://yogait.space/demonstrative_adjectives_worksheets6ubwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417313/normal_5fe494d6603bd.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/rational_functions_and_asymptotes.pdfIn PDF document text
    • http://babitilakibo.mywebcommunity.org/sample_detailed_lesson_plan_in_english.pdfIn PDF document text
    • http://sberpodarok2020.online/what_is_a_normal_crp_blood_test_readingr82xr.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/97209330563.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/canossa_secondary_school_application_form20huk.pdfIn PDF document text
    • http://all-gopro.com/fipiznwv4r.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/pesetufavo/55367137251.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f612e31c-e633-45c3-b7b9-84bca9d82e93/11422846425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a734236-ae0a-4cca-b418-563fd9d4ba90/nodizefazamabavodup.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/cot_bed_sheets_ikea.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/why_has_my_bluetooth_mouse_stopped_working.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/52799358053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cb9ef5a-2103-45b2-a919-96c24f9b7dc7/schlage_connect_be469_z-wave_plus_touchscreen_deadbolt_with_alarm.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/biology_book_10.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/xakeronif.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/99454266967.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/best_cracked_apk_store.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_off000103d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D2 5176 bytes
SHA-256: 845ee8015c0a880b8e028ac5131b8fb4ce4bd19c2bb58baa32b8eb08e51db2cf
font_01_sfnt_off00011599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11599 10532 bytes
SHA-256: 0a670dc6984655c923c827b27493e3f19610c19f34bf89480e3757ef1ff8de11

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