Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a1571bfd47d6559…

MALICIOUS

PDF

72.6 KB Created: 2021-02-28 18:21:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4d0c32fd1d680b60e070169ce5ebd28d SHA-1: 2ad5d0319b4cd21f94b8f65fce009b8ba0a608f3 SHA-256: 6a1571bfd47d655961afae949c134880df38d69747121195af6a6b5de694206d
126 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
  • 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://seumenha.ru/123?utm_term=how+to+cook+country+style+pork+ribs+in+electric+pressure+cooker PDF link annotation
    • http://lessonsonline.site/baby_growth_percentile_meaningwn0wi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480598/normal_5fde86269aa4e.pdfIn PDF document text
    • http://starconflict-game.ru/printable_ekg_rhythm_flashcards0kmma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_6022925016330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374951/normal_601b44935076e.pdfIn PDF document text
    • http://antileqphh.site/jasidavi3p5d2.pdfIn PDF document text
    • http://calipshatngaccs1.xyz/agatha_christie_books_listdld6a.pdfIn PDF document text
    • http://nout-prodat.site/continuous_numbers_in_excel_spreadsheet7jy4o.pdfIn PDF document text
    • http://shopwithsale.website/73777384048ouz0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495691/normal_5fe911591e1c0.pdfIn PDF document text
    • http://mifvideo.space/cet_result_2020_downloadtlexq.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/ampere_meter_analog_2auhdx3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369324/normal_6032682a7d8f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379363/normal_5fd161b328546.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/kibavutibeved/misubixeriwerute.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_off0000dd48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD48 5076 bytes
SHA-256: 6f3da1ee09e00118e8658d1608fe881eb48b591556376392f1d07b38bf0796bb
font_01_sfnt_off0000eeb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB7 11948 bytes
SHA-256: 611b81ff2f40b85550ce08999ecaf1ff0c340ab2f7ba0e88c31b153e2aa7023f