Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d9afdafc3c0499…

MALICIOUS

PDF

69.6 KB Created: 2021-02-11 19:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6c9bf2cfc4f2939bc86e6e224add5d97 SHA-1: e1ee9ec149d8bf454157ae8c601cf9ebd1f7692d SHA-256: f5d9afdafc3c04999894f463473adbf0ad9913e02a2e6f42330fb670f5f0d160
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://jottigo.ru/123?utm_term=nbr+5410+atualizada+2020 PDF link annotation
    • https://cdn.sqhk.co/runenuti/acdwGmo/rebanofubezuvakapize.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/Jih0QJ7/kuxof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426677/normal_5fcae85bc1cad.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/jgisFgc/86055225392.pdfIn PDF document text
    • https://cdn.sqhk.co/xeviremal/HR7jdhg/jexejido.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421615/normal_6009ab5f29cdd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafukifuwu.epizy.com/17756628238.pdfIn PDF document text
    • http://nifekubipaxo.epizy.com/annadata_sukhibhava_naa_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/update_android_box_m8s.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/arden_nc_police_department_accident_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/95221264836.pdfIn PDF document text
    • http://zopatirek.epizy.com/bomawezezenesuluzokimi.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/53280400100.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/font_awesome_from_github.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/rabunos.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_off0000d437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD437 5336 bytes
SHA-256: 28159712a3d2a043ac639d50fb4ee4f277cb951890c8487b68ecbcf640f5092a
font_01_sfnt_off0000e685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE685 10404 bytes
SHA-256: f43036167e29a7e0543449db923a9fd49c305227e3885eaa34af81cadb058524