Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7766a037200967…

MALICIOUS

PDF

67.1 KB Created: 2021-02-05 23:49:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 7183c5d7aeb8e967780ebbeb8699dd9c SHA-1: 245d68cce667e3590c1b91119c56fd112222a950 SHA-256: 7d7766a0372009673c8ceac114aedb95481d78764314ae271c1005138f8fe524
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://jacksth.ru/123?utm_term=ece+109+zeger PDF link annotation
    • http://afracheat4.xyz/my_little_pony_rainbow_runners_game_onliney0wt5.pdfIn PDF document text
    • http://zabavnyi-slon.ru/fabuwapanugevunodusewix4s4fy.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/www_aventuras_cancan_com_registrarsezlm10.pdfIn PDF document text
    • http://medyahanem.com/bollywood_movies_mp4movies._com59991.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/gotijejaj/open_office_flowchart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/m1134_anti-_tank_guided_missile_vehicle_atgm.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/20438666558.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/canon_lbp_6030_printer_driver_free.pdfIn PDF document text
    • http://ronodinagidos.rf.gd/giwite.pdfIn PDF document text
    • http://rugadugekowe.epizy.com/60884966345.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/15452648672.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/descargar_drastic_3ds_emulator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/97406542475.pdfIn PDF document text
    • http://mapexas.epizy.com/54580013526.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/sherlock_holmes_season_1_free.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_off0000c928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC928 4904 bytes
SHA-256: d012caafff8cfc5a70db128a83791a2619677a8dea3df8f0c283d7ff938ae81a
font_01_sfnt_off0000da01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA01 10888 bytes
SHA-256: 8c713b3bea969bbd5f7fd85fe0af926a9ea127f6862f2a4b4e311f3c2175637c