Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5c57d1bf9c637b…

MALICIOUS

PDF

74.9 KB Created: 2021-02-07 21:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3719ff168fa5da528281b9a9f96c98d0 SHA-1: 673b744a30d7e5e4d8a97a6b69af573bb2b972ae SHA-256: 1e5c57d1bf9c637bab55554fed33bbb4ae5371ee392a0591b0f8bf0fa3a277de
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/aws?utm_term=nfl+injury+report+week+9+2019 PDF link annotation
    • https://warazafipa.weebly.com/uploads/1/3/1/3/131381481/razovajev.pdfIn PDF document text
    • https://bajipupetezin.weebly.com/uploads/1/3/5/3/135315063/nasetojenevazilimo.pdfIn PDF document text
    • http://wersita.fun/85978824076b2ev.pdfIn PDF document text
    • http://korsabarca.com/pearson_algebra_1_textbook_online_freea94ud.pdfIn PDF document text
    • http://item-mask.top/gabijusdmqdl.pdfIn PDF document text
    • https://xuvurabog.weebly.com/uploads/1/3/2/6/132696285/lotuvodagokif.pdfIn PDF document text
    • https://bepixumute.weebly.com/uploads/1/3/5/3/135302933/deluvoginazo.pdfIn PDF document text
    • http://wgathering.org/cognitive_science_an_introduction_to_the_study_of_mind_2nd_editionps0va.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/3798510.pdfIn PDF document text
    • https://xilonoro.weebly.com/uploads/1/3/5/3/135314978/fekuwatolit_nibovitis_fotokinibe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_6011d3a6a1c19.pdfIn PDF document text
    • https://zetaxufonepijak.weebly.com/uploads/1/3/4/3/134353616/fifowev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487641/normal_5fda20b3b7aa2.pdfIn PDF document text
    • https://serewutedirafam.weebly.com/uploads/1/3/5/3/135339767/fab8b6b51219.pdfIn PDF document text
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/xetexuribatigo.pdfIn PDF document text
    • http://0fruit.space/7152239339qy5ep.pdfIn PDF document text
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/150c1c726ea5.pdfIn PDF document text
    • https://gubijebe.weebly.com/uploads/1/3/1/4/131483267/eae87.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A9 5292 bytes
SHA-256: 960e2f5c77f268ec890910800b8aa572af8148340f7f1bee9b845d33354e4580
font_01_sfnt_off0000f7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EF 11412 bytes
SHA-256: eb8cc9c2ccd8d5506bd2701622d11745fb567f96a7aaaa70438c8d3c6773d532

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