Malicious PDF — malware analysis report

Static analysis result for SHA-256 79febe9af189ea15…

MALICIOUS

PDF

62.7 KB Created: 2021-02-21 11:07:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: af52bee03bee8ac98c410030cf6567ff SHA-1: 0f484cb0c20960c34ca44eee8244388092421a42 SHA-256: 79febe9af189ea15b8d6d8fa11e34b5a78831753d7f63ca6b36f0c58ae5d10c1
136 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
  • 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/123?utm_term=circo+la+chola+chabuca+2019 PDF link annotation
    • http://uscreditcheck.info/best_free_software_for_pc_performance5e22u.pdfIn PDF document text
    • http://tiktokcopyrighthelpteam.com/ligalolukesagidowedijudwg6g.pdfIn PDF document text
    • http://podipotekoi.ru/diagnostic_microbiologyrqfij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5fdc420ad95ad.pdfIn PDF document text
    • http://xviiivbgz.com/weber_spirit_e-310_classic_grill_coversqe8y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_60118675a51e1.pdfIn PDF document text
    • http://limaxinsto.xyz/kuwizuluwejesesavoxuwolugq4x8.pdfIn PDF document text
    • http://centerbluebadge.com/ley_de_armas_2020_ogpqp3hn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418185/normal_602411a1d8378.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/rejiner/lataketurebekoxefunu.pdfIn PDF document text
    • https://s3.amazonaws.com/dagasopones/indirect_bilirubin_normal_range.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/devagewiw.pdfIn PDF document text
    • http://bomepexajusopa.epizy.com/flocabulary_answer_key_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/tetozepewukexexugibakov.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/conversion_de_milimetros_a_pulgadas_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/12915504394.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/51623989873.pdfIn PDF document text
    • http://widafasamuj.epizy.com/bodirus.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_off0000b68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB68E 5236 bytes
SHA-256: 44a6625fb91945fe1f00dbf938596a82e9003b8876fe308b9c2d6794a7e1088b
font_01_sfnt_off0000c852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC852 11088 bytes
SHA-256: 6ed616db7ebcae6d83f942e25bbc321bade8c2f61ca8ef22f1680d92c4ae4146