Malicious PDF — malware analysis report

Static analysis result for SHA-256 014c79daae2c8596…

MALICIOUS

PDF

72.1 KB Created: 2021-02-28 11:12:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 11dac8c71e23dcdfbab30ec849a85f5e SHA-1: 91d35acbe6da5cdecca46e803e20e8314a5b9222 SHA-256: 014c79daae2c8596724da7a4aab7a5f48d63d2a3c6a498e43b43a2e006701f0a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/strik?utm_term=hl-2270dw+toner+light PDF link annotation
    • http://erogan24.website/12th_street_rag_guitarrgflw.pdfIn PDF document text
    • http://educationonline.website/mimajoretakupusidowibanoepanx.pdfIn PDF document text
    • http://hotel-engels.ru/vepavuz1olza.pdfIn PDF document text
    • http://klokisik.space/129769840qszvv.pdfIn PDF document text
    • https://vafomelopujoxo.weebly.com/uploads/1/3/4/8/134864043/kulesemalujokob_tefigibezabir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491439/normal_601b593401a9d.pdfIn PDF document text
    • http://cryogen.me/tijevibisitidiwirepplsmi.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/77023955471rh2xh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403823/normal_601f7190e955b.pdfIn PDF document text
    • https://kaneloko.weebly.com/uploads/1/3/1/4/131408798/dedimunemorixodagufi.pdfIn PDF document text
    • http://osummer.space/87018149104h5r0i.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/zemunomipazikez/email_signature_template_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/41734421244.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/datozeponesedizilobor.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/jugika.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_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 5140 bytes
SHA-256: 6bfe7ac4d33b0889c37a3b73303ce0b7cfef6fdd2056faf52fe48dcfdf2cc480
font_01_sfnt_off0000f08d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08D 10348 bytes
SHA-256: 26b89e6399af3e311020931692d783f0a6452fa51e582610900356d844e45089